THE ANALYST THE JOURNAL OF THE Society of Public Analysts and Other Analytical Chemists A MONTHLY JOURNAL DEVOTED To THE ADVANCEMENT OF ANALYTICAL CHEMISTRY publication Committee : Gbafrman: J. R. NICHOLLS, C.B.E., DSc., F.R.I.C. N. L. ALLPORT, F.R.I.C. F. W. F. ARNAUD, F.R.I.C. A. L. BACHARACH, M.A., F.R.I.C. R. C. CHIRNSIDE, F.R.I.C. B. S. COOPER, BSc., F.1nst.P. H. E. COX, DSc., Ph.D., F.R.I.C. F. W. EDWARDS, F.R.I.C. B. S. EVANS, M.B.E. , M.C., D.Sc., F.R.I.C. L. EYNON, B.Sc., F.R.I.C. D. C. GARRATT, BSc., Ph.D., F.R.I.C., F.R.I.C. D. W. KENT-JONES, B.Sc., Ph.D., bon. Becretarp of tbe 5ocfetp: K. A. WILLIAMS, B.Sc., Ph.D., F.R.I.C., A.1nst.P. S. ERNEST MELLING, M.Sc., F.R.I.C. M.C., Ph.D., F.R.I.C. F. A. ROBINSON, M.Sc., LL.B., F.R.I.C. W. H. SIMMONS, B.Sc., F.R.I.C. L.S. THEOBALD, M.Sc., A.R.C.S., ERIC VOELCKER, A.R.C.S., F.R.I.C. C. WHALLEY, B.Sc., A.R.I.C. E. C. WOOD, BSc., Ph.D., A.R.C.S., G. H. WYATT, BSc., Ph.D., F.R.I.C. G. W. MONIER-WILLIAMS, O.B.E., F.R.I.C. F.R.I.C. Ibon. areaeurer of tbe 5ocietp: J. H. HAMENCE, Me%., Ph-D., F.R.1.C. IEbftOr: J. H. LANE, B.Sc., F.R.I.C. 'Eleefetant Sbftore : F. L. OKELL, F.R.I.C. and J. B. ATTRILL, B.A. VOL. 75 1 9 5 0 PUBtrSHlrD FOR THE SOCIETY BY W. HEFFER & SONS LTD. 4, PETTY CURY, CAMBRIDGE, ENGLANDTHE ANALYST THE JOURNAL OF THE Society of Public Analysts and Other Analytical Chemists A MONTHLY JOURNAL DEVOTED To THE ADVANCEMENT OF ANALYTICAL CHEMISTRY publication Committee : Gbafrman: J. R. NICHOLLS, C.B.E., DSc., F.R.I.C. N. L. ALLPORT, F.R.I.C. F. W. F. ARNAUD, F.R.I.C. A.L. BACHARACH, M.A., F.R.I.C. R. C. CHIRNSIDE, F.R.I.C. B. S. COOPER, BSc., F.1nst.P. H. E. COX, DSc., Ph.D., F.R.I.C. F. W. EDWARDS, F.R.I.C. B. S. EVANS, M.B.E. , M.C., D.Sc., F.R.I.C. L. EYNON, B.Sc., F.R.I.C. D. C. GARRATT, BSc., Ph.D., F.R.I.C., F.R.I.C. D. W. KENT-JONES, B.Sc., Ph.D., bon. Becretarp of tbe 5ocfetp: K. A. WILLIAMS, B.Sc., Ph.D., F.R.I.C., A.1nst.P. S. ERNEST MELLING, M.Sc., F.R.I.C. M.C., Ph.D., F.R.I.C. F. A. ROBINSON, M.Sc., LL.B., F.R.I.C. W. H. SIMMONS, B.Sc., F.R.I.C. L. S. THEOBALD, M.Sc., A.R.C.S., ERIC VOELCKER, A.R.C.S., F.R.I.C. C. WHALLEY, B.Sc., A.R.I.C. E. C. WOOD, BSc., Ph.D., A.R.C.S., G. H. WYATT, BSc., Ph.D., F.R.I.C. G. W. MONIER-WILLIAMS, O.B.E., F.R.I.C. F.R.I.C. Ibon. areaeurer of tbe 5ocietp: J. H. HAMENCE, Me%., Ph-D., F.R.1.C. IEbftOr: J.H. LANE, B.Sc., F.R.I.C. 'Eleefetant Sbftore : F. L. OKELL, F.R.I.C. and J. B. ATTRILL, B.A. VOL. 75 1 9 5 0 PUBtrSHlrD FOR THE SOCIETY BY W. HEFFER & SONS LTD. 4, PETTY CURY, CAMBRIDGE, ENGLANDERRATA : VOL. 75, 1950: pp. 71 to 73. p. 1 1 1 , line 2 of Public A4ppointments, for “County Borough of Southampton,” read “County of p. 206. p. 251. p. 445. p. 459. p. 569. p. 663. p. 669, Table 11. For “phenodoxone,” read “phenadoxone” throughout, Southampton.” Below Fig. 3, for “g.,” read “pg.” Paper by Sutton and Markland. Line 6 (Equation 3 ) , for “1-2A - 0.069 B.I.,” read “1.2A + 0.069 B.I.” Third line of “Procedure,” for “30 ml.,” rend “300 ml.” Line 20, for “is more efficient,” read “is no more efficient.” Under the heading “ 436mp,” for “ Calorex (ON 3)” read ‘‘ Calorex (ON 13).” The date oi reading should be November 26th, 1949.In column 5, opposite 405mp, fur “ 0.2 ” read “ 0.1.’’ INDEX TO VOLUME 75 INDEX TO NAMES * Denotes authors of original papers and notes that have been published in The Analyst. A Adam, W. B. Review of Howard’s Canning Tech- nology, 58. *Airey, L., et al. Mercury drop control: Applica- tion to derivative and differential polarography, 287. *Albans, J. W., et al. Paper chromatography in penicillin production control, 657. “Albon, N., et al. Chromatographic detmn. of raffinose in raw sugars, 454. Alcock, A. Appointment as Public Analyst to Boroughs of Eccles and Stretford, 57. *- et al. Crystalline potassium hydrogen tartrate in tinned grapes, 280. *Allberry, E.C., ef al. Analytical chemistry of bromine manufacture. 11. Bromine content of Cheshire salt deposit and some borehole and other brines, 352. Allen, D. G. Appointment as Deputy Agricultural Analyst to County Borough of Northampton, 393 ; as Deputy Public Analyst to Metropolitan Borough of Bermondsey and County of South- ampton, 111; Erratum, 283. Allport, N. L. Appointment as Analyst (Drug Testing) to Ministry of Health and Analyst to Port of London Authority, 57. *Allsopp, C . B. Absorptiometric estmn. of mustard gas by iodoplatinate and starch, 281. American Pharmaceutical Assoc. National Formu- lary. 9th Edn. (Publication received), 693. *Amos, A. J., et al. Experiments in photo-electric recording of flour grade by measurements of reflecting power, 133.*Anderson, J. R. A., et al. Quantitative estmn. of l-methyl-5-amino-acridine, 318. Ansley, A. J. Introduction to Laboratory Technique. 2nd Edn. (Publication received), 632. Armour Research Foundation, Illinois Institute of Technology. Establishment of National Registry of Rare Crystallographic Data, 340. *Ashton, G. C., et at. Detmng. propamidine and M & B 1270 (di-bromo-propamidine) with penta- cyanoammonioferrate, 437. *Atkinson, R. O., et al. Colours developed in paper chromatography of amino-acids, 447. Attrill, . J. B. Review of Daniels’ Outlines of Physzcal Chemistry, 607. B *Bacon, A. Photometric detmn. of phosphorus in low-alloy steels, 321. Bailey, A. E. Melting and Solidification of Fats and Fatty Acids. (Publication received), 566. *Baker, P. B., et al.Analysis of penicillin mixtures by paper chromatography of hydroxamic acid derivatives, 651. *- Paper chromatography in penicillin production control, 657. *Baker, R. G., et al. Detmng. propamidine and M & B 1270 (di-bromo-propamidine) with penta- cyanoarnmonioferrate, 437. *Ballard, C. W. Colorimetric detmn. of p-amino- phenol in P-methylaminophenol sulphate (metol), 430. *Barnes, H. Modified 2 :4-xylenol method for nitrate estmns., 388. *Barraclough, A., et al. Investigations in examina- tion and on variations in composition of milk. I. Detmng. ’Hortvet freezing-point, 42. Barron, H. Modern Plastics. 2nd Edn. (Review), 227. - Modern Synthetic Rubbers. 3rd Edn. (Review), 508. Beard, E. H. Editor of Colonial Geology and Mwzeral Resources, Vol. 1, No, 1.(Publication received), 632. *Beerstecher, E., jun. Simple detmn. of microgram amounts of cyanide, 280. Belcher, R. Review of Charlot’s Thebrie et Me’tlzode Nozdvelle d’dnalyse Qualitative. 3rd Edn., 396. Bennett, C . T. Obituary, 230. Berle, W. G. Physical Methods in Chemical Analysis. Vol. 1. (Review), 691. BBder, D., e t al. MCthodes Modernes d’Analyse Quantitative MinBrale. 2nd Edn. (Review), 631. *Bishop, E., e t al. Influence of glucose on diphenyl- amine indicators and on dichromate - iron titra- tions. New assay of official saccharated iron carbonate preparations, 273. Estmng. chitin and chitin nitrogen in crawfish waste and derived products, 185. *Black, R. M. Detmng. antimony and tin in cable sheathing alloys, 166. *Blake, G. G. Application of radio-frequencies to conductimetric analysis, 689.*Black, M. M., e t at.iV INDEX TO VOLUME 75 *Blake, G.. G. Application of radio-frequencies to conductimetric analysis (rectified radio-frequency method), 32. Booth, N. P. Obituary, 230. *Booth, P. R. Device for use with water-driven vacuum pumps to prevent water sucking back into apparatus, 499. *Booth, V. H. Apparatus for pressure and suction regulation in chromatographic columns, 109. *Bottomley, G. A. Delicate test for cupric and ferric ions in aqueous solution, 501. Bray, G. T. Editor of Colonial Plant and Animal Products, Vol. 1, No. 1. (Publication received), 632. Testing of Bituminous Mixtures. 2nd Edn. (Review), 228. Detmng. chromium in chromite. 111. Detmng. chromium in standard sample of U.S. National Bureau of Standards chrome refractory No.103 by selected methods, 12. Bull, A. J. Obituary, 341. Burn, J. H. Biological S tandardisation. (Publica- *Burrows, S. Colorimetric detmn. of oxalate, 80. Button, 1). F. H. Appointment as Public Analyst Broome, D. C. *Bryant,. F. J., et al. tion received), 566. to Metropolitan Borough of Camberwell, 564. C Cahill, T. J. Appointment as Deputy Public Analyst and Deputy Agricultural Analyst to County of Westmorland and County Borough of Darlington, 393; as Deputy Public Analyst to Borough of Stockton-on-Tees, County Borough of West Hartlepool and County Borough of South Shields, and as Deputy Official Agricultural Analyst to County of Cumberland, County Borough of West Hartlepool and County Borough of South Shields, 564; as Deputy Public Analyst to County bf Northumberland and County of Cumberland, 690.Calvin, M., ef al. Isotopic Carbon: Techniques in its Measurement and Chemical Manipulation. (Review), 113. Campbell, G. A., et al. DDT and Newer Persistent Insecticides. 2nd Edn. (Publication received), 693. Carter, E. E. Biochemical Preparations. Vol. I. (Review), 57. Chalmers, F. G. D. Appointment as Deputy Public Analyst to County Borough of Walsall, 111; as Public Analyst to Borough of Hereford, 283. Appointment as Deputy Public Analyst for County Borough of Portsmouth and County of Isle of Wight, 393; as Deputy Public Analyst to Borough of Gosport and Deputy Official Agricultural Analyst to County of Isle of Wight, 564. Investigations in examination and on variations in composition of milk.I. Detmng. Hortvet freezing-point, 42. Charlot, G. Th6orie et MCthode Nouvelle d’hnal yse Qualitative. 3rd Edn. (Review), 396. - et al. A,ICthodes Modernes d’ Analyse Quantita- tive RlinCrale. 2nd Edn. (Review), 631. Childs, H. Appointment as Public Analyst to County Borough of Sheffield, 283. Chirnside, R. C. Review of Berle’s Physical Methods air Chemical Analysis. Vol. 1, 691. - Review of Charlot and BCzier’s MLthodes Moderne d’Analyse Quantitative Minhale. 2nd Edn., 631. Chapman, W. B. *- et al. ‘Clark, J. F. Testing atmospheric conditions in theatres and cinemas, 525. “Clasper, M., et al. Separation of mixtures of adipic and sebacic acids, 688. *Colson, A. F. Rapid micro-detmn. of nitrogen in organic substances by simple modification of Dumas method, 264.Cook, W. G. H. Taylor’s Principles and Practice of Medical Jurisprudence. 10th Edn. Vols. I and 11. (Review), 395. *Corbett, J. A. Colorimetric detmn. of impurities in titanium metal. Cox, H. E. Chemical Analysis of Foods. 4th Edn. (Review), 284. - Review of Jacobs’ Analytical Chemistry of Industrial Poisons, Hazdrds and Solvents. 2nd Edn., 508. - Review of Terms used in Spectrographic A nalysis. Part I . Emission Speclrography. British Standard 1636, Part I, 450. *- Spectrophotometric estmn. of vitamin D, 521, *Crawford, A. B., et al. Influence of glucose on diphenylamine indicators and on dichromate - iron titrations. New assay of official saccharated iron carbonate preparations, 273. Cregeen, W. A. Appointment as Deputy Public Analyst to County of Somerset, 111. *Cropper, F.R., et al. Amperometric titration of mercaptans, 55. *Currie, L. R., e t al. Micro-gravimetric detmn. of lead in bronzes, 471. *- Micro-gravimetric detmn. -of lead in white metals, fusible alloys and tin-free copper-base alloys, 467. Curtman, L. H. Introduction to Semi-micro Qualitative Chemical Analysis. Revised Edn. (Publication received), 566. Cuthbertson, W. F. J. Review of Eddy’s Vitamino- Iron and manganese, 475. logy, 395. D Dalley, R. A. Appointment as Deputy Public Analyst and Deputy Official Agricultural Analyst to County Borough of Leeds, 111. *- Estmng. horse-fat in admixture with other fats, 336. Daniels, F. Outlines of Physical Chemistry. (Review), 507. *Darbishire, 0. B. Constant temperature bath operating below room temperature, 223.*Daubney, C. G., et al. Detmng. egg in salad cream. I, 305. Davies,. D. R. A. Appointment as Additional Public Analyst to County and Burgh of Dumfries and County of Wigtown, 690. Davies, W. R. Obituary, 230. Davis, J. G. Dictionary of Dairying. (Publication received), 566. Davson, A. P. Appointment as Deputy Public Analyst to Metropolitan Borough of Greenwich, 57. de Hailes, A. J. Obituary, 230. *Dickinson, D., et al. Paper test for citrus juices, 687. *Dobson, F., et at. Analysis of penicillin mixtures by paper chromatography of hydroxamic acid derivatives, 65 1. *Drum, J. A,, et al. Fructose urea and fructose acetone reactions as selective tests for sugars, 56. Dutta, N. N. Obituary, 230. *Duxbury, M. Potentiometric detmn. of chloride in biological fluids with silver - silver chloride electrode, 679.INDEX TO VOLUME 76 V *Dwyer, F.P., ef al. 201. Dyer, B. Russell, 240. Micro-estmn. of cadmium, First Bernard Dyer MemoriaI Lecture. E Eddy, W. H. Vitaminology. (Review), 395. *Edmundson, I. C., et al. Chlorophyll for breaking emulsions in alkaloidal assays of solanaceous drugs, 169. Elkins, H. B. Chemistry of Industrial Toxicology. (.Publication received), 566. Ehs, B. A. ‘ Review of Elsevier’s Encyclopaedia of Organic Chemistry. Vol. 12B, Part I . Series 111, Carboisocyclic Condensed Compounds, 630. - Review of Timmerman’s Physico-chemical Con- stants of Pure Organic Compounds, 691. *El-Sokkary, A. M., et al. Lactose and chloride contents of Egyptian cows’ and buffaloes’ milks, 143, *Etheridge, A. T. Separation of lead and bismuth, 279. *Ethrington, C.G., ef al. Colorimetric detmn. of small amounts of hydrogen sulphide in effluent gases with Spekker absorptiometer, 209. *Evans, B. S., ef al. Spot-tests for identifying alloying elements in copper-base alloys, 191. Evers, .N. Review of Jenkins and Hartung’s Chemzstry of Organic Medicinal Products. 3rd Edn., 450. Eynon, L. Review of Percival’s Structural Carbo- hydrate Chemistry, 450. F *Fearon, W. R., ef al. Fructose urea-and fructose acetone reactions as selective tests for sugars, 56. Feigl, F. Chemistry of Specific, Selective and Sensitive Reactions. Translated by R. E. Oesper. (Review), 394. Findlay, A. Review of Partington’s Advanced Treatise on Physical Chemistry. Vol. I. Funda- mental Principles. Properties of Gases, 506.Firth, J. B. Review of Smith’s Taylor’s Principles and Practice of Medical Jurisprudence. 10th Edn. Vols. I and 11, 395. *Fitzpatrick, J., et al. Nickel and molybdenum contents of normal human urine and faeces, 279. *Franklin, D., et al. Detmng. carotene in dried peas, 49. *Frant, R., et al. Detmng. trichloroacetic acid in urine, 462. *Fraser, J. R., et al. Gasometric method for estmng. creta praeparata in National flour, 402. *Freeland, D. M. Pressure cooking as aid in isolation of extraneous matters in cereal products, 222. *Furness, W. Detmng. chromium in chromite. I. Volumetric detmn. of chromate with special reference to effects of vanadate and arsenate, 2. G *Gaddum, J. H. Hormone assay: introduction, 530. *Gage, J. C. Analysis of p-nitrophenyl diethyl *Gardner, K., et al.Estmng. small amounts of Gaydon, A. G., et al. Identification of Molecular thiophosphate (E605, parathion), 189. carbon in steel, 173. Spectra. 2nd Edn. (Publication received). 693 *Gentry, C. H. R., et aZ. Extraction and photometric estmn. of metals with 8-hydroxyquinoline, 17. Getman, F. H. Outlines of Physical Chemistry. Completely revised by F. Daniels, (Review), 507. *Gibson, N. A., et al. Micro-estmn. of cadmium, 201. ‘Gibson, R. 0,, ef al. Analytical chemistry of bromine manufacture. 111. Survey of in-shore waters round coasts of Great Britain, 357. *Glister, G. A., et al. Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper, 3 10. *Gorfinkel, L., et al. Colorimetric detmn.of aldehyde in distilled liquors, 221. Gortner, R. A., et al. Outlines of Biochemistry. 3rd Edn. (Review), 171. Gortner, R. A., jun., ef al. Outlines of Biochemistry. 3rd Edn. (Review), 171. Gortner, W. A., et al. Outlines of Biochemistry. 3rd Edn. (Review), 171. *Grainger, A., et al. Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper, 310. *Gray, D. J. S. Critical factors in resorcinol reaction for detmng. fructose, 314. *Gridgeman, N. T. Bibliography on carotene estmn., with special reference to green-leaf material, 574. *Gross, D., et al. Chromatographic detmn. of raffinose in raw sugars, 454. H *Hales, J. L. Infra-red spectroscopic estmn. of 4-methyl-2 : 6-ditertiary butyl phenol in mixtures containing 2-methyl and 3-methyl-4:6-ditertiary butyl phenols, 146. Hallas, C.A. Obituary, 663. Hamence, J. H. Appointment as Public Analyst to Urban District of Hornchurch, 57. *- Confirmatory test for presence of diphenyl- aniine in commercial petrol, 106. *Hamer, A., et al. Amperometric titration of mercaptans, 55. Hanley, J. Obituary, 341. *Hardwick, P. J. Detmng. chromium in chromite. 11. Detmng. chromium in synthetic sample of known composition, 9. *- et al. Detmng. chromium in chromite. 111. Detmng. chromium in standard sample of U.S. National Bureau of Standards chrome refractory No. 103 by selected methods, 12. Harral, J. C. Appointment as Deputy Public Analyst to County Borough of Bradford, 564; as Deputy Public Analyst to Borough of Batley, Borough of Keighley and Urban District of Castleford, and Deputy Official Agricultural Analyst to County Borough of Dewsbury, 690.*Harris, F. J. T., et al. Paper test for citrus juices, 687. “Harris, F. R. Detmng. ferrous iron in silicates, 496. Harrison, G. R., ef al. Practical Spectroscopy. (Publication received), 632. Hartung? W. H., ef al. Chemistry of Organic Medicinal Products. 3rd Edn. (Review), 450. *Haslam, J. Analytical chemistry of bromine manufacture. IV. Analysis of bromine and substances containing bromine, 371. - Review of Barron‘s Modern Plastics. 2nd Edn., 227. - Review of Penn’s High Polvmeric Chemistrv. 565.vi INDEX TO VOLUME 75 *Halam, J. et al. Analytical chemistry of bromine manufacture. I. Detmng. bromine in brine, 343; 11. Bromine content of Cheshire salt deposit and some borehole and other brines, 352; 111.Survey of in-shore waters round coasts of Great Britain, 357; V. Apparatus for quantitative estmn. of volatile solutes, 383. *- Examination of methyl methacrylate polymers and co-polymers, 63. *- Separation of mixtures of adipic and sebacic acids, 688. "Hassan, H. A., et al. Lactose and chloride contents of Egyptian cows' and buff aloes' milks, 143. Hawley, J. W. Obituary, 230, 231. Heald, J. A. Obituary, 230. Heidelberger, C., et al. Isotopic Carbon : Techniques in its Measurement and Chemical Manipulation. (Review), 1 13. Headrick, J. Obituary, 230, 231. Hevesy, G. Radioactive Indicators. Their Applica- tion in Biochemistry, Animal Physiology and Pathology. (Review), 565. "Hickinbotham, A. R. Test for volatile substances present in traces.Application to cyanide, 502. *Higgs, D. G., et al. Spot-tests for identifying alloying elements in copper-base alloys, 191. Hills, G. M. Obituary, 633. *Holmes, I(. E. Detmng. theobroinine in cocoa products, 457 ; Erratum, 686. *Holness, H., et al. Qualitative separation of copper and arsenic groups, 276. Hopkin and Williams, Ltd. Organic Reagents and Organic Analysis. 2nd Edn. (Publication received), 693. *Houghton, G. U. Detmng. residual chlorine in water, 180. Howard, A. J. Canning Technology. (Review), 68. Huckel, W. Structural Chemistry of Inorganic Compounds. Vol. I. (Publication received), 632. 'Huelin, F. E. Oxalic acid in detmng. ascorbic acid, 391. *Hunter, J. 43. Absorptiometric detmn. of magnesium, 9 1. I *ImperiaJ Chemical Industries, Ltd.Standardisa- tion of volumetric solutions, 577. International Commission for Uniform Methods of Sugar Analysis. Report of Proceedings of Tenth Session, Brussels, 1949. (Publication received), 693. International Union of Pure and Applied Chemistry. Comptes Rendus de la Quinzikme Conference, Amsterdam, 1949. (Publication received), 693. Iyer, Y. V. S. Obituary, 230. J 'Jackson, H. Detmng. sodium in calcined alumina and aluminium hydrates, 414. Jacobs, M. B. Analytical Chemistry of Industrial Poisons, Hazards and Solvents. 2nd Edn. (Review), 508. James, G. V. Appointment as Public Analyst and Official Agricultural Analyst to County Borough of Bournemouth, 11 1. Jean, M. Prkcis d'Analyse Chimique des Aciers et des Fontes. (Review), 449.Jenkins, D. C. Appointment as Public Analyst to County of Warwickshire and County Borough of Walsall, 111; as Deputy Public Analyst to Borough of Hereford, 283. Jenkins, G. L., et al. Chemistry of Organic Medicinal Products. 3rd Edn. (Review), 450. *Jenkins, M. H., ef aZ. Gelatin in detmng. silicon in ferrous alloys, especially silicon-rich ferro- alloys, 481. *Jewsbury, A. Rapid photometric detmn. of silicofluoride in hydrofluoric acid, ammonium fluoride, sodium fluoride and soluble coloured fluorides, 256. *Jones, A,, et al. Microbiological assay of ribo- flavine in yeast and yeast products. Use of Lactobacillus helveticus in 17-hour titrimetric method, 608. *- Twenty-four hour plate assay technique for vitamin B, complex of yeast, 613. Jones, A. 0. Appointment as Deputy Public Analyst to County Borough of Sheffield, 283.Jones, D. E. Appointment as Official Agricultural Analyst to County Borough of nlerthyr Tydfil, 111. K Keeley, E. C. Obituary, 453. *Kendall, F., et al. Estmng. thickness of wax bloom on vulcanised rubbers, 74. *Kent-Jones, D. W., et al. Experiments in photo- electric recording of flour grade by measurements of reflecting power, 133. *- Photo-electric detmn. of colour of flour as affected by grade, by measurements of reflecting power, 127. *Kenyon, C., et al. Modification of cobaltinitrite method for absorptiometric detmn. of potassium in microgram range, 269. *King, H,, et al. Detmng. phenadoxone in urine, 71; Erratum, 263. *King, J., et al. Fluorescence microscopy as aid to food and drug analysis, 397.Kirk, P. L. Quantitative Ultramicroanalysis. (Publication received), 566. Kolthoff, I. M., et al. Textbook of Quantitative Inorganic Analysis. Revised Edn. (Publication received), 693. L Lang, R. Laboratory and Workshop Notes. Langmuir, I. Phenomena, Atoms, Molecules. Lawson, G. Obituary, 341. "Lederer, M., ef aZ. Quantitative estmn. of l-methyl-5-amino-acridine, 318. Lees, A. Appointment as Additional Public Analyst to Borough of Lancaster, 690. *Levin, B., et al. Micro-Kjeldahl detmn. of serum proteins, with selenium and copper as catalysts : interrelation of time of digestion and constituents of digestion mixture, 561. Lieb, H., et al. Anleitung zur Darstellung organischer Praparate mit kleinen Substanz- mengen. - (Publication received), 566. 'Lilliman, B.Prepng. p-nitrobenzyl derivatives of barbituric acids on semi-micro scale, 626. "Lindsey, A. J. Quantitative electro-deposition of tin from chloride solutions. 11. Stannous tin solutions, 104. (Review), 115. (Review), 630.INDEX TO VOLUME 75 vii Loofbourow, J. R., et af. Practical Spectroscopy. (Publication received) , 632. Lord, R. C., et al. Practical Spectroscopy. (Pub- lication received), 632. Lothian, G. F. Absorption Spectrophotometry. (Review) , 69. *Lyons, F. B., et al. Detmng. carotene in dried peas, 49. M *McClelland, J. A. C. Detmng. rare earths, 392. - Review of Seith and Ruthardt’s Chemische Spektralanalyse. Eine Anleitung IUY Erlernung und Ausfuhrung von Spektralanalyse in Chemischen Laboratorium. 4th Edn., 114. *McGregor, A. J. Colorimetric micro-detmn.of calcium in plant tissue extracts, 211. *Malowan, L. S. Qualitative reaction for yohimbine, 338. *Manley, C. H. Analysis of petrol - kerosine mixtures, with specific reference to boiling-point, 604. *- et af. Crystalline potassium hydrogen tartrate in tinned grapes, 280. *Markland, J., et af. Investigations in examination and on variations in composition of milk. I. Detmng. Hortvet freezing-point, 42. *- Standardisation of Hortvet thermometers, 251 ; Erratum, 317. *Marsden, F. C., et al. Colorimetric detmn. of small amounts of hydrogen sulphide in effluent gases with Spekker absorptiometer, 209. *Martin, A. J. P., et al. Analysis of penicillin mixtures by paper chromatography of hydroxamic acid derivatives, 651. *Martin, W., et af. Experiments in photo-electric recording of.flour grade by measurements of reflecting power, 133. *- Photo-electric detmn. of colour of flour as affected by grade, by measurements of reflecting power, 127. lellon, M. G. Analytical Absorption Spectroscopy. (Publication received), 632. *Middleton, G., et al. Detmng. purity of propylene glycol, 406. *Miller, C. C., et al. Micro-gravimetric detmn. of lead in bronzes, 471. *- Midro-gravimetric detmn. of lead in white metals, fusible alloys and tin-free copper-base alloys, 467. *Miller, S. A,, et af. Titrimetric detmn. of ethylene, 492. Minor, R. G. Appointment as Deputy Public Analyst to Metropolitan Borough of Islington, 111; as Deputy Public Analyst to Metropolitan Borough of Camberwell, 564. Mitchell, J., jun., et al. Chemical Analysis.Vol. V, Aquametry. Application of Karl Fischer Reagent to Quantitative Analyses involving Water. (Review), 114. *Mitchell, T. J. Detmng. marc content of fresh and dried sugar beets, 410. *Morris, S., et af. Microbiological assay of ribo- flavine in yeast and yeast products. Use of Lactobacillus helveticus in 17-hour titrimetric method, 608. *- Twenty-four hour assay technique for vitamin B, complex of yeast, 613. Morton, R. A. Review of Gortner’s Outlines of Biochemistry. 3rd Edn., 171. - Review of Lothian’s Absorption Spectrophoto- metry, 59. Morton, R..A. Review of Weissberger’s Technique of Organic Chemistry. VoZ. I . Physical Methods of Organic Chemistry. Part I I . 2nd Edn., 172. *Moses, G., et al. Analytical chemistry of bromine manufacture. I. Detmng.bromine in brine, 343; 11. Bromine content of Cheshire salt deposit and some borehole and other brines, 352. N *Nicholas, J. W., et al. Isolation of lines of mercury arc by filters, with especial reference to photo- electric absorptiometry, 662; Erratum, this index, p. iii. Nicholls, J. R. Review of Cox’s ChemicaZ AnaZysis of Foods. 4th Edn., 284. *Norwitz, G. Direct electrolysis of copper from silver chloride filtrates, 551. *- Electrolytic detmn. of bismuth, 473. 0 *OberhoBer, V. G., et al. Micro-Kjeldahl detmn. of serum proteins, with selenium and copper as catalysts : interrelation of time of digestion and constituents of digestion mixture, 561. Oesper, R. E. Translator of Feigl’s Chemistry of Speci$c, Selective and Sensitive Reactions. (Keview), 394. Okell, F.L. Review of Jean’s Pre’cis d’Analyse Chimique des Aciers et des Fontes, 449. *Osborn, (3. H. Polarographic methods for analysis of fine chemicals, 671. *Ovenston, T. C. J., et al. Modification of cobalti- nitrite method for absorptiometric detmn. of potassium in microgram range, 269. *- Spectrophotometric detmn. of small amounts of hydrogen peroxide in aqueous solutions, 204; Erratum, 405. P Page, J. E. Review of Calvin et aZ.’s lsotopic Carbon: Techniques an its Measurement and Chemical Manipulation, 11 3. - Review of Hevesy’s Radioactive Indicators. Their Application in Biochemistry, Animal Physiology and Pathology, 565. *- et al. Detmng. phenadoxone in urine, 71; Erratum, 263. *Parker, C. A., et al. Modification of cobaltinitrite method of absorptiometric detmn.of potassium in microgram range, 269. “Parkes, E. B. Selenious acid test for barbiturates, 448. Partington, J. R. Advanced Treatise on Physical Chemistry. Vol. I. Fundamental Principles. Properties of Gases.. (Review), 506. Patterson, A. M. German - English Dictionary for Chemists. 3rd Edn. (Publication received), 693. “Pearman, F. H., et al. Titrimetric detmn. of ethylene, 492. Pearse, R. W. B., et al. Identification of Molecular Spectra. 2nd Edn. (Publication received), 693. Penn, W. S. High Polymeric Chemistry. (Review), 565. Percival, E. Gi. V. Structural Carbohydrate Chemistry. (Review), 450.Viii INDEX TO VQLUME 75 Perry, W. L. M. Reports on Biological Standards: VI. Design of Toxicity Tests. (Medical Research Council, Special Report Series No.270.) (Pub- lication received), 632. "Phillips, W. M., et al. Estmng. thickness of wax bloom on vulcanised rubbers, 74. Pickard, Sir Robert. Obituary, 230, 231. Pike, E. R. Appointment as Deputy Public Analyst to County Borough of Leicester, 564. *Poll&, F. F., ef aZ. Isolation of lines of mercury arc by filters, mth special reference to photo- electric absorptiometry, 662; Erratum, this index, p. iii. *Purushottam, A., et at. Phthalic acid as selective reagent for zirconium, 684. *- Tannin in estmn. of zirconium and its separation from thorium, 555. R *Radley, J. A. Deciphering charred documents, 628. Radt, F. Elsevier's Encyclopaedia of Organic Chemistry. Vol. 12B, Part I. Series 111, Carbo- isocyclic Condensed Compounds. (Review), 630. "Rafter, T. A. Sodium peroxide decomposition of minerals in platinum vessels, 485.*Rao, Bh. S. V. R., et al. Phthalic acid as selective reagent for zirconium, 684. *- Separation of thorium from ceria earths and application to analysis of monazite, 553. *- Tannin in estmn. of zirconium and its separation from thorium, 555. *Rathenasinkam, E. Colour test for cocaine, 169. *- Detcng. phenyl barbiturates, 108. "Raymond, F. J., ef al. Detmng. small quantities of copper in lead and lead alloys, 24. Rees, W. J. Obituary, 341. *Rees, W. .T. Detmng. iron, copper, lead and mercury in fabricated polyvinyl chloride, 160. *- et al. Spectrophotometric detmn. of small amounts of hydrogen peroxide in aqueous solutions, 204; Erratum, 405. Reid, J. C., et at. Isotopic Carbon: Techniques in its Measurement and Chemical Manipulation.(Review), 1 13. Rendle, T. Obituary, 453. *Rheinlander, A. H. Identification and approximate estmn. of reducing sugars in presence of sucrose, 444; Erratum, 629. *Riason, J. B. Improved micro-detmn. of fluorine based on examination of fluoride - fluosilicate equilibrium, 84. *Ridyard, H. .N. Theoretical and practical con- siderations in detmn. of aneurine (vitamin B,) with special reference to recovery factor, 634. Ritchie, P., D. Chemistry of Plastics and High Polymers. (Review) , 566. Robertson, Sir Robert. Obituary, 230, 231. Robinson, C. H. Obituary, 230, 231. Robinson, I?. A. Review of Carter's Biochemical Preparations. Vol. I, 67. *Rowland, W. J., ef al. Estmng. small amounts of carbon in steel, 173. *Russell, Sir E. John.First Bernard Dyer Memorial Lecture, 240. Ruthardt, K:, et al. Chemische Spektralanalyse. Eine Anleitung zur Erlernung und Ausfuhrung von Spektralanalyse im Chemischen Labora- torium. 4th Edn. (Review), 114. *Rutter, L. Applications of modified technique in paper chromatography, 37. *Ryan, D. E. Colorimetric detmn. of rhodium with 2-mercapto-4 :5-dimethylthiazole, 557. Rymer, T. E. Appointment as Deputy Public Analyst for County of Surrey, 393; as Deputy Public Analyst to County Borough of Croydon and Deputy Official Agricultural Analyst to County of Surrey and County Borough of Croydon, 564. S Sandell, E. B., et al. Textbook of Quantitative Inorganic Analysis. Revised Edn. (Publication received), 693. "Schild, H. 0. Hormone assay: General approach to biological assays, 533.Schiiniger, W., et al. Anleitung zur Darstellung organischer Praparate mit lcleinen Substanz- mengen. .(Publication received), 566. "Schwartz, H. M., et al. Estmng. chitin and chitin nitrogen in crawfish waste and derived products, 185. *Scott, T. R. Effect of bicarbonate on colorimetric detmn. of uranium, 100. Seith, W., et al. Chemische Spektralanalyse. Eine Anleitung zur Erlernung und Ausfiihrung von Spektralanalysen im Chemischen Labora- torium. 4th Edn. (Review), 114. *Sexton, G. E. W., et al. Detmng. egg in salad cream. I, 305. *Sherrington, L. G., et al. Extraction and photo- metric estmn. of metals with 8-hydroxyquinoline, 17. *Shame, S. C. Gravimetric detnin. of copper, iron, aluminium and titanium with N-benzoylphenyl- hydroxylamine, 27. *Short, €I.G. Detmng. oxygen in chromium metal, 335. *- Detmng. small amounts of aluminium in iron, 420. "Skelton, d. S., et al. Colorimetric detmn. of aldehyde in distilled liquors, 221. Skertchley, W. P. Obituary, 230, 231. *Smales, A. A., ef al. Mercury drop control: Application to derivative and differential polaro- graphy, 287. Smith, A. Appointment as Deputy Public Analyst to East Riding of Yorkshire, 111. Smith, D. M., et al. Chemical Analysis. Vol. V, Aquametry. Application of Karl Fischer Reagent to Quantitative Analyses involving Water. (Review), 114. *Smith, G. S. New type of polarographic cell suitable for routine and research, 215. *- Polarographic cells with fused-in capillaries, 440. Smith, S. Taylor's Principles and Practice of Medical Jurisprudence.10th Edn. Vols. I and 11. (Review), 395. *Smythe, J. A. Dry assay of sulphides and oxides of lead and bismuth, 21. *Somers, G. F. Hormone assay: Measurement of thyroidal activity, 537. *Soppet, W., et al. Examination of methyl methacrylate polymers and co-polymers, 63. 'Srinivasan, K. R. Potentiometric detmn. of small amounts of procaine, sulphanilamide and related compounds by bromate - bromide titration, 76. Stannett, V. Cellulose Acetate Plastics. (Publica- tion received), 566. Stephenson, H. F. Obituary, 230, 231. Stewart, C. P. Taylor's Principles and Practice of Medical Jurisprudence. 10th Edn. Vols. I and 11. (Review), 395.INDEX TO :%tewart, G. A. Hormone assay: Assay of posterior pituitary lobe extracts, 642. *Stock, F. G. Estmng. tomato solids in tomato products by method involving detmn.of lycopene by absorption spectroscopy, 117. *- Estmng. vitamin B, using fluorimeter: prepng. standard curve, 499. Stock, J. T. Review of Lang's Laboratory and Workshop Notes, 115. "Stockdale, D. Estmng. iron by dichromate, 150. Straflord, N. Review of Mitchell and Smith's Chemical Analysis. Pol. V , Aquametry. Applica- tion of Karl Fischer Reagent to Quantitative Analyses involving Water, 114. *- et al. Amperometric titration of mercaptans, 55. Straub, J. Calculation of botanical composition of wheat flours and offals from chemical analysis, 142. "Stuart, R. G., et al. Colours developed in paper chromatography of amino-acids, 447. *Stuckey, R. E., et al. Colours developed in paper chromatography of amino-acids, 447. *- Detmng.purity of propylene glycol, 406. "Sutton, R. W., et al. Investigations in examination and on variations in composition of milk. I. Detmng. Hortvet freezing-point, 42. *- Standardisation of Hortvet thermometers, 351; Erratum, 317. T Taylor, G. Appointment as Public Analyst to Urban District of Hornchurch, 57. - Review of Analytical Chemistry and Chemical Analysis, 1948, 226. - Review of Williams' Oils, Fats and Fatty Foods- their Practical Examination. 3rd Edn., 505. *Thomas, H., et al. Estmng. small amounts of carbon in steel, 173. Thomson, R. T. Obituary, 230, 231. Timmermans, J. Physico-chemical Constants of Pure Organic Compounds. (Review), 691. Tolbert, B. M., et ai. Isotopic Carbon: Techniques in its Measurement and Chemical Manipulation. (Keview), 113."Tompsett, S. L., ef al. Nickel and molybdenum content of normal human urine and faeces, 279. Trapnell, B. M. W. Review of Langmuir's Phenomena, Atoms, Molecules, 630. "Trewick, R. F. G., et al. Qualitative separation of copper and arsenic groups, 276. Tribley, H. G. Obituary, 341. "Trought, H., et al. Detmng. propamidine and M & B 1270 (di-bromo-propamidine) with pentacyano- ammonioferrate, 437. "Tucker, S. H. Generator for air-free carbon dioxide or hydrogen, 170. Turner, M. E. D. Appointment as Public Analyst to Borough of Swindon and Deputy Public Analyst to County of Herefordshire, 690. *Twigs, G. H., et al. Detmng. penicillinase activity, 106. U *U.S. National Bureau of Standards. Detmng. chromium in chromite. 111. Detmng. chromium in standard sample of - chrome refractory No.103 by selected methods. Bryant and Hard- wick, 12. VOLUME 75 v ix "Venkataramaniah, M., et al. Separation of thorium from ceria earths and its application to analysis of monazite, 553. I Voelcker, E. Appointment as Official Agricultural Analyst to County of Huntingdon, 564. W Walker, G. H. Appointment as Additional Public Analyst to Borough of Lancaster, 690. "Warren, D., et al. Colorimetric detmn. of small amounts of hydrogen sulphide in effluent gases with Spekker absorptiometer, 209. * Washbrook, C. C. Picrolonates and calcium. Semi-micro volumetric detmn. with cetyl pyridinium bromide, 621. Watson, R. S. Appointment as Additional Public Analyst to City of Glasgow, 111. *Webb, J. A. V., et al. Gelatin in detmng. silicon in ferrous alloys, especially silicon-rich ferro- alloys, 481.Weissberger, A. Technique of Organic Chemistry. Vol. I. Physical Methods of Organic Chemistry. Part 11. 2nd Edn. (Review), 172. West, T. F., et al. DDT and Newer Persistent Insecticides. 2nd Edn. (Publication received), 693. * Westendorp, J., et al. Detmng. trichloroacetic acid in urine, 462. *Weston, R. E., et al. Fluorescence microscopy as aid to food and drug analysis, 397. *- Gasometric method for estmng. creta praeparata in National flour, 402. 'Wheeler, T. S., et al. Detmng. carotene in dried peas, 49. *Whitehead, T. P., et al. Micro-Kjeldahl detmn. of serum proteins, with selenium and copper as catalysts: interrelation of time of digestion and constituents of digestion mixture, 561. Thorpe's Dictionary of Applied Chemistry.4th Edn. Vol. X, Plagioclase - Sodium. (Publication received), 632. Chlorophyll for breaking emulsions in alkaloidal assays of solanaceous drugs, 169. Williams, A. L. Appointment as Public Analyst to County of Isle of Wight, 393; as Official Agricultural Analyst to County of Isle of Wight, 564. Williams, H. A. Appointment as Public Analyst to Metropolitan Borough of Greenwich, 57. *- Detmng. fluoride by etching, 510. Williams, K. A. Oils, Fats and Fatty Foods- their Practical Examination. 3rd Edn. (Review), 505. *Williams, L. H. Photometric detmn. of copper in aluminium alloys with tetraethylene pentamine, 435. *Williamson, A. T., et al. Analytical chemistry of bromine manufacture. V. Apparatus for quantitative estmn. of volatile solutes, 383.*Willmott, P. L., ef al. Detmng. smaIl quantities of copper in lead and lead alloys, 24. Wilson, D. M. Review of Broome's Testing of Bituminous Mixtures. 2nd Edn., 228. *Winteringham, F. P. W. Estmng. bromides by activation-exchange method, 627. *Wise, W. S. Separation of mixtures of adipic and sebacic acids, 219. *- et al. Whiteley, M. A. *Wilkins, B. J., et al. Detmng. penicillinase activity, 106.X INDEX TO VOLUME 75 Wood, E. C. Appointment as Public Analyst to Borough of Lowestoft, County Borough of Great Yarmouth and County of Norfolk, 283; as Public Analyst and Official Agricultural Analyst to County Borough of Ipswich, 564; as Public Analyst to Borough of Lancaster and County of West Suffolk and Official Agriculfural Analyst to County Borough of Norwich, 690.Wyatt, G. H. Review of Barron’s Modern Synthetic Rubbers. 3rd Edn., 508. - Review of Feigl’s Sfieci$c, Selective and Sensitive Reactions, 394. Wyatt, CJ. H. Review of Ritchie’s Chemistry of *- Water-soluble matter in vegetable tanned Plastics and High Polymers, 566. leather, 170. Y Yankwich, P. F., et aZ. Isotopic Carbon : Techniques in its Measurement and Chemical Manipulation. (Review), 113. *Yardley, J. T. Accurate detmn. of cobalt, 156.INDEX TO VOLUME 75 xi INDEX TO SUBJECTS * Denotes original papers and notes that have been published in The Analyst. A *Absorptiometry : Isolation of lines of mercury arc by filters, with special reference to photo- electric - . Nicholas and Pollak, 662; Erratum, this index, p. iii. Absorption Spectrophotometry.Lothian. (Re- view), 59. *Acetaldehyde : Colorimetric detmn. of - in distilled liquors. Gorfinkel and Skelton, 221. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Acetic acid : Application of radio-frequencies to conductimetric analysis (rectified radio- frequency method). Blake, 32. B.S. 576:1950, 393. Labelling of Food Order, 1950, 504. solution: Ministry of Food Circular MF 15/50, Acetone: B.S. 509: 1950, 393. *Fructose urea and fructose - reactions as selective tests for sugars. Fearon and Drum, 56. * Acidimetry : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Acids : Separating adipic and sebacic -. Wise, 219; *Haslam and Clasper, 688. *Adipic acid: Separation of - and sebacic acid, Wise, 219; *Haslam and Clasper, 688.*Adrenaline : Hormone assay. Gaddum, 530. *Alcoholic beverages : Colorimetric detmn. of aldehyde in distilled liquors. Gorfinkel and Skelton, 221. *Aldehyde(s) : Colorimetric detmn. of - in distilled liquors. Gorfinkel and Skelton, 221. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Alkalimetry : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Alkaloidal assays : Chlorophyll for breaking emul- sions in - of solanaceous drugs. Edmundson and Wilkins, 169. *Alloys: Detmng. antimony and tin in cable sheathing -. Black, 166. *Detmng. small quantities of copper in lead and lead ---. *Direct electrolysis of copper from silver chloride filtrates. Norwitz, 551. *Gelatin in detmng. silicon in ferrous -, especially silicon-rich ferro-alloys.Jenkins and Webb, 481. *Micro-gravimetric detmn. of lead in white metals, fusible - and tin-free copper-base -. Miller and Currie, 467. *Photometric detmn. of copper in aluminium - with tetraethylene pentamine. Williams, 425. *Spot-tests for identifying alloying elements in copper-base -. *Alumina: Detmng. sodium in calcined - and aluminium hydrates. Jackson, 4 14. *Aluminium alloys : Photometric detmn. of copper in -with tetraethylene pentamine. Williams, 425. Short, 420. 564. cordial: Labelling of Food Order, 1950, 504. Willmott and Raymond, 24. Evans and Higgs, 191. *Detmng. small amounts of - in iron. Aluminium-continued *Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. ‘Gravimetric detmn.of copper, iron, - and titanium with N-benzoylphenylhydroxylamine. Shome, 27. *hydrates : Detmng. sodium in calcined alumina and -. Jackson, 414. *Spot-tests for identifying alloying elements in copper-base alloys. American Chemical Society : Arrangements for 75th Anniversary, 451. *Amino-acids : Colours developed in paper chromatography of -. Atkinson, Stuart and Stuckey, 447. *p-Aminophenol : Colorimetric detmn. of - in p-methylaminophenol sulphate (metol) . Bal- lard, 430. *Ammonium fluoride : Rapid photometric detmn. of silicofluoride in hydrofluoric acid, -, sodium fluoride and soluble coloured fluorides. Jewsbury, 256. *Ammonium thiocyanate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. Amy1 acetate: B.S. 552: 1950, 393.*n-Amy1 penicillin : Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper. Glister and Grainger, 310. *Amylocaine hydrochloride : Colour test for cocaine. Rathenasinkam. 169. Analysis : Analytical Chemistry and Chemical -, 1948. Proceedings of International Congress on Analytical Chemistry, Utrecht. (Review), 225. Chemical -. Vol. V, Aquametry. Application of Karl Fischer Reagent to Quantitative Analyses involving Water. Mitchell and Smith. (Review), 114. Chemische Spektralanalyse. Anleitung zur Erler- nung und Ausfuhrung von Spektralanalysen im Chemischen Laboratorium. Seith and Ruthardt. 4th Edn. (Review), 114. Chemistry of Specific, Selective and Sensitive Reactions. Feigl. Translated by Oesper.(Review), 394. Introduction to Semi-micro Qualitative Chemical -. Curtman. Revised Edn. (Publication received), 566. Mkthodes Modernes d’Analyse Quantitative Minkrale. Charlot and Bkzier. 2nd Edn. (Review), 631. of oils and fats. Organic Reagents and Organic -. Hopkin and Williams. 2nd Edn. (Publication received), 693. Physical Methods in Chemical - . Berle. Vol. I. (Review), 691. Prkcis d’Analyse Chimique des Aciers et des Fontes. Jean. (Review), 449. Quantitative Ultramicro- -. Kirk. (Publica- tion received), 566. Report of Proceedings of Tenth Session of Inter- national Commission for Uniform Methods of Sugar - , Brussels, 1949. (Publication received), 693. Evans and Higgs, 191. B.S. 684:1950, 393.Xii INDEX TO VOLUME 75 Analy sis-continued "Standardisation of volumetric solutions.Im- perial Chemical Industries, Ltd., 577. *Test for volatile substances present in traces. Application to cyanide. Hickinbotham, 502. Textbook of Quantitative Inorganic -. Kolthoff and Sandell. (Publication received), 693. ThCorie et Mkthode Nouvelle cl' Analyse Qualita- tive. Charlot. 3rd Edn. (Review), 396. Analyst : Cessation of publication of abstracts, 1. Analytical Chemistry and Chemical Analysis, 1948. Proceedings of International Congress on -, Utrecht. (Review), 225. Chemistry of Industrial Poisons, Hazards and Solvents. Jacobs. 2nd Edn. (Review), 508. *Androgens : Hormone assay. *Aneurine : Estmng. ___ using fluorimeter. Prepng. standard curve. Stock, 499. *hydrochloride : Fluorescence microscopy as aid to food and drug analysis. King and Weston, 397.*Theoretical and practical considerations in detmn. of - with special reference to recovery factor. Ridyard, 634. *Aniline: Polarographic methods for analysis of fine chemicals. Osborn, 671. Animal: Colonial Plant and - Products, Vol. I, No. 1. (Publication received), 632. *Anthraquinone : Polarographic methods for anal'ysis of fine chemicals. Osborn, 671. 'Antidiuretic hormone : Assay of posterior pituitary lobe estracts. Stewart, 542. *Hormone assay. Gaddum, 530. *Antimony: Detmng. - and tin in cable sheathing alloys. Black, 166. *Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276."Apparatus : Analysis of penicillin mixtures by paper chromatography of hydroxamic acid derivatives. Baker, Dobson and Martin, 651. *Analytical chemistry of bromine manufacture. IV. Analysis of bromine and substances con- taining bromine. Haslam, 371; V. - for quantitative estmn. of volatile solutes. Haslam and Williamson, 383. *Application of radio-frequencies to conducti- metric analysis (rectified radio-frequency method). Blake, 32. *Applications of modified technique in paper chromatography. Rutter, 37. *Attempts a t potentiometric detmn. of chloride in biological fluids with silver - silver chloride electrode. Duxbury, 679. *Constant temperature bath operating below room temperature. Darbishire, 223. Detmng. carotene in green-leaf material. I.Fresh grass. Society of Public Analysts, Analytical Methods Committee, Sub-committee on Vitamin Estmns., Carotene Panel, 568. *Detmng. ferrous iron in silicates. Harris, 496. *Detmng. fluoride by etching. *Detmng. small amounts of carbon in steel. Gardner, Rowland and Thomas, 173. *Detmng. sodium in calcined alumina and aluminium hydrates. Jackson, 4 14. *Device for use with water-driven vacuum pumps to prevent water sucking back into -. Booth, 499. Gaddum, 530. Williams, 510. Apparatus-continued *Examination of methyl methacrylate polymers and co-polymers. *Experiments in photo-electric recording of flour grade by measurements of reflecting power. Kent-Jones, Amos and Martin, 133. "Fluorescence microscopy as aid to food and drug analysis.King and Weston, 397. *for pressure and suction regulation in chromato- graphic columns. Booth, 109. "Gasometric estmn. of creta praeparata in National flour. Fraser and Weston, 402. *Generator for air-free carbon dioxide or hydrogen. Tucker, 170. Industrial perforated plates. B.S. Specn. 1669 : 1950, 690. Interchangeable conical ground glass joints. B.S. Specn. 572: 1950, 340. *Investigations in examination and on variations in composition of milk. I. Detmng. Hortvet freezing-point. Sutton, Markland, Barraclough and Chapman, 42. Laboratory and Workshop Notes. Lang. (Ke- view), 115. *Mercury drop control. Application to derivative and differential polarography. Airey and Smales, 287. *New polarographic cell for routine and research. Smith, 215. One-mark bulb pipettes.B.S. Specn. 1583 : 1950, 690. *Paper chromatography in penicillin production control. Albans and Baker, 657. *Photo-electric detmn. of colour of flour as affected by grade, by measurements of reflecting power. Kent- Jones and Martin, 127. *Polarographic cells with fused-in capillaries. Smith, 440. *Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Potentionietric detmn. of small amounts of procaine, sulphanilamide and related com- pounds by bromate - bromide titration. Srinivasan, 76. *Rapid micro-detmn. of nitrogen in organic substances by simple modification of Dumas method. Colson, 264. "Sodium peroxide decomposition of minerals in platinum vessels. Rafter, 485. "Standardising Hortvet thermometers. Sutton and Markland, 251; Erratum, 317.*Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. "Testing atmospheric conditions in theatres and cinemas. Clark, 525. *Theoretical and practical considerations in detmn. of vitamin B,, with special reference to recovery factor. Ridyard, 634. *Titrimetric detmn. of ethylene. Miller and Pearman, 492. "Water-soluble matter in vegetable tanned leather. Wyatt, 170. Apple and blackberry jam: Food Standards (Pre- serves) (Amendment) Order, 1950, 503. and blackcurrant jam: Food Standards (Pre- serves) (Amendment) Order, 1950, 503. and damson jam: Food Standards (Preserves) (Amendment) Order, 1950, 503. and plum jam: Food Standards (Preserves) (Amendment) Order, 1950, 503. aAd raspberry and/or loganberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503.Haslam and Soppet, 63.VOLUME 75 xiii Apple-contiiwed and strawberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jelly: Food Standards (Preserves) (Amendment) Order, 1950, 503. Applied Chemistry : Thorpe's Dictionary of -. Whiteley. 4th Edn. Vol. X: Plagioclase- Sodium. (Publication received), 632. Appointments, official: 57, 111, 253, 564, 690. Apricot and peach jam: Food Standards (Pre- serves) (Amendment) Order, 1950, 503. jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. Aquametry: Chemical Analysis. \rol. V. -. Application of Karl Fischer Reagent to Quantitative -4nalyses involving Water. Mitchell and Smith. (Review), 114. *Arc : Isolation of lines of mercury ~ by filters, with special reference to photo-electric absorp- tionietry.Kjcholas and I'ollak, 662; Erratum, this index, p. iii. *Arsenic : Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. *group : Qualitative separation of copper group and -. *Spot-tests for identifying alloying elements in copper-base alloys. *Arsenious oxide : Standartlising volumetric solutions. Imperial Chemical Industries, Ltd., 577. "Ascorbic acid : Applications of modified technique in paper chromatography. Rutter, 37. *Oxalic acid in detmng. -. Huelin, 391. "Aspirin : Selenious acid test for barbiturates. "Atmospheric conditions : Testing - in theatres Atoms : Phenomena, - , Molecules. Langmuir. *Atropme : Colour test for cocaine. Hathcnasinkam, Holness and Trewick, 276. Evans and Higgs, 191.Parkes, 448. and cinemas. Clark, 525. (Review), 630. 169. B *Barbiturates : Detcng. phenyl -. Rathena- 'Barbituric acids : Prepng. P-nitrobenzyl derivatives of - on semi-micro scale. *Barium : Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Barium hydroxide : S tandardisation of volumetric solutions. Imperial Chemical Industries, Ltd., 577. Barley drink : Soft Drinks (Amendment) Order, 1950, 339. *Bath: Constant temperature - operating below room temperature. Darbishire, 223. Batley: Appointment of J. C. Harral as Deputy Public Analyst to Borough of -, 690. "Bearing metal : Micro-gravimetric detmn. of lead in white metals, fusible alloys and tin-free copper-base alloys. "Beets: Detmng. marc content of fresh and dried sugar -.Mitchell, 410. "Benxanthrone : Polarographic methods for analysis of fine chemicals. Osborn, 671. "Benzene hexachloride : Polarographic methods for analysis of fine chemicals. "Benzocaine : Colour test for cocaine. Hathena- sinkam, 169. "Selenious acid test for barbiturates. Parkes, 448. sinkam, 108. "Selenious acid test for -. Parkes,. 448. Lilliman, 626. Miller and Currie, 467. Osborn, 671. *N-Benzoylphenylhydroxy~~e : Gravimetric detmn. of copper, iron, aluminium and titanium with -. Shome, 27. * Benzyl penicillin : Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper. Glister and Grainger, 310. Bermondsey: Appointment of D. G. Allen as Deputy Public Analyst to Metropolitan Borough of -, 111. *Beryllium : Spot-tests for identifying alloying elements in copper-base alloys. Evans and Higgs, 191.*Bicarbonate: Effect of - on colorimetric detmn. of uranium. Scott, 100. Bilberry jam : Food Standards (Preserves) (Amend- ment) Order, 1950, 603. Biochemical Preparations. Vol. I. (Review), 57. Biochemistry: Outlines of --. Gortner and Gortner. 3rd Edn. (Review), 171. *Biological fluids : Attempts at potentiometric detmn. of chloride in - with silver - silver chloride electrode. Duxhury, 679. *Biscuits: Pressure cooking as aid in isolation of extraneous matters in cereal products. Free- land, 223. "Bismuth: Electrolytic detmn. of ---. Norwitz, 473. *Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sher- rington, 17. "Polarographic methods for analysis of fine chemicals.Osborn, 67 1. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. *Separating lead and -. *Bismuth oxide : Dry assay of sulphides and oxides of lead and bismuth. Smythe, 21. "Bismuth sulphide: Dry assay of sulphides and oxides of lead and bismuth. Smythe, 21. Bitters: Labelling of 'Food Order, 1950, 504. Bituminous Mixtures: Testing of -. Broome. 2nd Edn. (Review), 228. Black beer: Labelling of Food Order, 1960, 604. Blackberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jelly: Food Standards (Preserves) (Amendment) Order, 1950, 503. Blackcurrant jam: Food Standards (Preserves) (Amendment) Order, 1960, 503. jelly : Food Standards (Preserves) (Amendment) Order, 1950, 503. * Blaud's pills : Influence of glucose on diphenylamine indicators and on dichromate - iron titrations. New assay of official saccharated iron carbonate Preparations.Bishop and Crawford, 273. *Blood sepm : Absorptiometric detmn. of magnesium. Hunter, 91. *Bloom: Estmng. thickness of wax - on vul- canised rubbers. Book reviews : Barron. Modern Plastics. 2nd Edn., 227, Barron. Modern Synthetic Rubbers. 3rd Edn., 50s. Berle. Physical Methods in Chemical Analysis. Vol. I, 691. British Standards Institution. Terms Used in Spectrographic Analysis. Part I. Emission Spectrography, 450. Broome. Testing of Bituminous Mixtures. 2nd Edn., 228. Calvin, Heidelberger, Reid, Tolbert and Yank- wich. Isotopic Carbon: Techniques in its Measurement and Chemical Manipulation, 113. Etheridge, 279. Kendall and Phillips, 74.XiV INDEX TO VOLUME 75 Book reviews-continued Carter.Biochemical Preparations. Vol. I, 57. Charlot. Thborie et M6thode Nouvelle d’Analyse Qualitative. 3rd Edn. (Review), 396. Charlot and BCzier. M6thodes Modernes d’Analyse Quantitative Minkrale. 2nd Edn., 631. Cox. Chemical Analysis of Foods. 4th Edn., 284. Daniels. Eddy. Vitaminology, 395. Feigl. Chemistry of Specific, Selective and Gortner and Gortner. Outlines of Biochemistry. 3rd Edn., 171. Hevesy. Radioactive Indicators. Application in Biochemistry, Animal Physiology and Pathology, 565. Howard. Canning Technology, 58. Jacobs. Analytical Chemistry of Industrial Poisons, Hazards and Solvents. 2nd Edn., 508. Jean. Prkcis d’Analyse Chimique des Aciers et des Fontes, 449. Jenkins and Hartung.Chemistry of Organic Medicinal Products, 450. Lang. Laboratory and Workshop Notes, 115. Langmuir. Phenomena, Atoms, Molecules, Lothian. Absorption Spectrophotometry, 59. Mitchell and Smith. Chemical Analyses. Vol. V. Aquametry, 114. I’artington. Advanced Treatise on Physical Chemistry. Vol. I. Fundamental Principles. Properties of Cases, 506. Penn. High Polymeric Chemistry, 565. Percival. Structural Carbohydrate Chemistry, 450. Ritchie. Chemistry of Plastics and High Polymers, 566. Seith and Ruthardt. Chemische Spektralanalyse. Anleitung zur Erlernung und Ausfuhrung von Spektralanalysen im Chemischen Laboratorium. 4th Edn., 114. Smith, Cook and Stewart. Taylor’s Principles and Practice of Medical Jurisprudence. 10th Edn., 395. Timmermans. Physico-Chemical Constants of Pure Organic Compounds, 691.Weissberger. Technique of Organic Chemistry. Vol. I. Physical Methods of Organic Chemistry. Part 11. 2nd Edn., 172. Williams. Oils, Fats and Fatty Foods-Their Practical Examination. 3rd Edn., 505. Analytical Chemistry and Chemical Analysis, 1948, 225. Elsevier’s Encyclopaedia of Organic Chemistry. Vol. 12B, Part I, Series 111, 630. See also Publications received. Bournemouth: Appointment of G. V. James as Public Analyst and Official Agricultural Analyst to County Borough of -, 111. Bradford: Appointment of J. C . Harral as Deputy Public Analyst to County Borough of -, 554. Bramble jam : Food Standards (Preserves) (Amend- ment) Order, 1950, 503. jelly : Food Standards (Preserves) (Amendment) Order, 1950, 503. *Brandy: Colorimetric detmn.of aldehyde in distilled liquors. Gorfinkel and Skelton, 221. *Brass: Micro-gravimetric detmn. of lead in white metals, fu.sible alloys and tin-free copper-base alloys. Miller and Currie, 467. Outlines of Physical Chemistry, 507. Sensitive Reactions, 394. 630. * Brine(s) : Analytical chemistry of bromine manu- facture. I. Detmng. bromine in -. Haslam and Moses, 343; 11. Bromine content of Cheshire salt deposit and of borehole and other -. Haslam, Allberry and Moses, 352. British Standard Specifications : 506: 1950, methyl alcohol, 393. 507: 1950, ethyl alcohol, 393. 508: 1950, n-butyl alcohol, 393. 509: 1950, acetone, 393. 549 : 1950, diacetone alcohol, 393. 551 : 1950, n-butyl acetate, 393. 552: 1950, amyl acetate, 393. 553: 1950, ethyl acetate, 393.672 : 1950, interchangeable conical ground glass 573: 1950, dibutyl phthalate, 393. 574: 1950, diethyl phthalate, 393. 575 : 1950, carbon tetrachloride, 393. 576: 1950, acetic acid, 393. 580: 1950, trichloroethylene (types A, B and C), 628-32 and 650-56: 1950. Vegetable oils, 284. 662 : 1950, carbon disulphide, 393. 663: 1950, ethyl lactate, 393. 684: 1950, methods of analysis of oils and fats, 868: 1950, cod oil for sulphonation, 449. 1582: 1950, technical compound cod oil, 449. 1583: 1950, one-mark bulb pipettes, 690. 1593: 1950, perchloroethylene, 393. 1594: 1950, diacetin (glyceryl diacetate), 393. 1595: 1950, zsopropyl alcohol, 393. 1636 : Part 1 : 1950, terms used in spectrographic analysis. Emission spectrography, 450. 1647: 1950, pH scale, 449. 1669 : 1950, industrial perforated plates, 690. British Standards Institution : Address of branch office in Manchester, 690. *Bromate - bromide solution : Standardising volu- metric solutions.Imperial Chemical Industries, Ltd., 577. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Bromide(s) : Estmng. __ by activation-exchange method. Winteringham, 627. *Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Bromine: Analytical chemistry of - manu- facture. I. Detmng. - in brine. Haslam and Moses, 343; 11. - content of Cheshire salt deposit and of borehole and other brines. Haslam, Allberry and Moses, 352; 111. Survey of in-shore waters round coasts of Great Britain. Haslam and Gibson, 357; IV. Analysis of - and substances containing -.Haslam, 371; V. Apparatus for quantitative estmn. of volatile solutes. Haslam and Williamson, 383. *Bronzes : Micro-gravimetric detmn. of lead in -. Miller and Currie, 471. *BuiTaloes’ milk: Lactose and chloride contents of Egyptian cows’ milk and -. El-Sokkary and Hassan, 143. Butanol : See Butyl alcohol. n-Butyl acetate: B.S. Specn. 551 : 1950, 393. n-Butyl alcohol: B.S. Specn. 508: 1950, 393. joints, 340. 393. 393. C *Cable sheathing alloys : Detmng. antimony and *Cadmium : Micro-estmn. of - . Dwyer and tin in -. Black, 166. Gibson, 201.INDEX TO VOLUME 75 xv Cadmium-continued *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. *Spot-tests for identifying alloying elements in copper-base alloys.*Caffeine : Selenious acid test for barbiturates. Parkes, 44s. *Calcium : Colorimetric micro-detmn. of - in plant tissue extracts. McGregor, 211. *Picrolonates and -. Semi-micro volumetric detmn. with cetyl pyridinium bromide. Wash- brook, 621. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Californian poppy : Applications of modified technique in paper chromatography. Kutter, 37. Camberwell: Appointment of D. F. H. Button as Public Analyst and R. G. Minor as Deputy Public Analyst to Metropolitan -Borough of Evans and Higgs, 191. -, 564. Canning Technology. Howard. (Review) , 58. Carbohydrate : Structural - Chemistry. Percival. (Review), 450. 'Carbon: Estmng. small amounts of - in steel. Gardner, Rowland and Thomas, 173.Isotopic -, Techniques in its Measurement and Chemical Manipulation. Calvin, Heidel- berger, Reid, Tolbert and Yankwich. (Review), 113. Carbon dioxide: Generator for air-free - or hydrogen. Tucker, 170. *Testing atmospheric conditions in theatres and cinemas. Clark, 525. Carbon disulphide: B.S. Specn. 662: 1950, 393. Carbon tetrachloride: B.S. Specn. 575: 1950, 393. *Carotene: Detmng. - in dried peas. Franklin, Lyons and Wheeler, 49. Detmng. - in green-leaf material. I. Fresh grass. SOC. Public Analysts and Other Analytical Chemists, Analytical Methods Com- mittee, Sub-committee on Vitamin Estmns., Carotene Panel, 568; Erratum, 686; *Biblio- graphy on __- estmn., with special reference to green-leaf material. Gridgeman, 574. Castleford: Appointment of J.C. Harral as Deputy Public Analyst to Urban District of -, 690. Catsup : See Ketchup. *Cells : Polarographic ___ with fused-in capillaries. Smith, 440. Cellulose Acetate Plastics. Stannett. (Publication received), 566. "Cereal products: Pressure cooking as aid in isolation of extraneous matters in -. Freeland, 222. *Cerebra-spinal fluid : Attempts a t potentiometric detmn. of chloride in biological fluids with silver - silver chloride electrode. Duxbury, 679. *Cerelose : Identification and approximate estmn. of reducing sugars in presence of sucrose. Rheinlander, 444; Erratum, 629. *Ceria earths: Separation of thorium from - and application to analysis of monazite. Venka- taramaniah and Rao, 553. *Ceric sulphate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577.*Cetyl pyridinium bromide : Picrolonates and calcium. Semi-micro detmn. with ---. Washbrook, 621. Cheese: Labelling of Food Order, 1950, 504. *Chemicals : Polarographic methods for analysis of fine -. Osborn, 671. Chemistry : Elsevier's Encyclopaedia of Organic -. Radt. Voi. 12B, Part I. Series 111, Carboisocyclic Condensed Compounds. (Re- view), 630. Thorpe's Dictionary of Applied -. Whiteley. 4th Edn. Vol. X: Plagioclase-Sodium. (Publication received), 632. Cherry jam: Food Standards (Preserves) (Amend- ment) Order, 1950, 503. *Chitin : Estmng. - and - nitrogen in crawfish waste and derived products. Black and Schwartz, 185. *Chloride : Attempts a t potentiometric detmn. of - in biological fluids with silver - silver chloride electrode.Duxbury, 679. *Lactose and - contents of Egyptian cows' and buffaloes' milks. El-Sokkary and Hassan, 143. *Chlorine : Analytical chemistry of bromine manu- facture. 11. Bromine (and chlorine) content of Cheshire salt deposit and borehole and other brines. Haslam, Allberry and Moses, 352; IV. Analysis of bromine and substances con- taining bromine. Haslam, 37 1. *Detmng. residual - in water. Houghton, 180. *Chlorophyll : Applications of modified technique in paper chromatography. Rutter, 37. *for breaking emulsions in alkaloidal assays of solanaceous drugs. Edmundson and Wilkins, 169. Chloros : Agent for cleansing milk vessels. Ministries of Agriculture & Fisheries and Food. Circular M F 11/50, 504. *Chocolate : Detmng. theobromine in cocoa products.Holmes, 457. Sugar Confectionery and Cocoa Products (Amend- ment No. 3) Order, 1950, 629. *Choline: Detmng. egg in salad cream. I. Daubney and Sexton, 305. Christmas puddings : Labelling of Food Order, 1950, 504. *Chromate: Detmng. chromium in chromite. I. Volumetric detmn. of - with special reference to effects of vanadate and arsenate. Furness, 2. *Chromatographic columns : Apparatus for pressure and suction regulation in -. Booth, 109. *Chromatography : Applications of modified technique in paper -. *Colours developed in paper - of amino- acids. *Chrome rekactory : Detmng. chromium in chromite. 11. Detmng. chromium in standard sample of U.S. National Bureau of Standards-No. 103 by selected methods. Bryant and Hardwick, 12. "Chromite: Detmng. chromium in -.I . Volu- metric detmn. of chromate with special reference to effects of vanadate and arsenate. Furness, 2; 11. Detmng. chromium in synthetic sample of known composition. Hardwick, 9; 111. Detmng. chromium in standard sample of U.S. National Bureau of Standards chrome refractory No. 103 by selected methods. Bryant and Hardwick, 12. *Chromium : Detmng. - in chromite. I. VoIu- metric detmn. of chromate with special reference to effects of vanadate and arsenate. Furness, 2; 11. Detmng. - in synthetic sample of known composition. Hardwick, 9 ; 111. Detmng. - in standard sample of U.S. National Bureau of Standards chrome refractory No, 103 by selected methods. Bryant and Hardwick, 12. Rutter, 37. Atkinson, Stuart and Stuckey, 447.xvi INDEX TO VOLUME 75 Chromium-cont inued *Detmng.oxygen in - metal. *Spot-tests for identifying alloying elements in Cider: Soft Drinks (Amendment) Order, 1950, 339. "Cinemas : Testing atmospheric conditions in Citrus Fruit (Amendment and Revocation) Order, "juices: Paper test for -, Dickinson and *Cobalt: Accurate detmn. of -. Yardley, 156. 'Applications of modified technique in paper chromatography. Rutter, 37. "Extraction and photometric estmn. of metals with S-hydroxyquinoline. Gentry and Sher- rington, 17. *Polarographic methods for analysis of fine chemicals. Osborn, 67 1. 'Spot-tests for identifying alloying elements in copper-base alloys. *Cobaltinitrite method : Modification of __ for absorptiometric detmn. of potassium in micro- gram range. Kenyon, Ovenston and Parker, 269. *Cocaine : Colour test for -.Rathenasinkam, 169. Cocoa Products : Chocolate, Sugar Confectionery and - (Amendment No. 3) Order, 1950, 629. *products : netmng. theobromine in -. Holmes, 457. -- for sulphon- ation, 449. B.S. Specn. 1582 : 1950. Technical compound - ,449. Colonial Geology and Mineral Resources : Vol. J, No. 1. (Publication received), 632. Plant and Animal Products: Vol. I, KO. 1. (Publication received), 632. *Colour : Experiments in photo-electric recording of flour grade by measurements of reflecting power. *Photo-electric detmn. of - of flour as affected by grade, by measurements of reflecting power. Kent-Jones and Martin, 127. *Composts, mushroom : Colorimetric detmn. of oxalate. Burrows, SO. *Conductimetric analysis : Application of radio- frequencies to -.Blake, 689. *Application of radio-frequencies to - (rectified radio-frequency method). Blake, 32. Confectionery : Chocolate, Sugar - and Cocoa Products (Amendment No. 3) Order, 1950, 629. Congress : Analytical Chemistry and Chemical Analysis, 1948. Proceedings of International - on Analytical Chemistry, Utrecht. (Re- view), 225. Arrangements for International ___ on Analytical Chemistry, 1952, 509. Constants : Physico-Chemical - of Pure Organic Compounds. Timmermans. (Review), 691. *Copper : Applications of modified technique in paper chromatography. Rutter, 37. *-base alloys: Spot-tests for identifying alloying elements in -. Evans and Higgs, 191. *Delicate test for cupric and ferric ions in aqueous solution. Bottomley, 501. *Detmng. iron, -, lead and mercury in fabri- cated polyvinyl chloride.Rees, 160. 'Detmng. small quantities of - in lead and lead alloys. Willmott and Raymond, 24. *Direct electrolvsis of - from silver chloride Short, 335. copper-base alloys. Evans and Higgs, 191. theatres and -. Clark, 525. 1950, 283. Harris, 687. Evans and Higgs, 191. Cod oil: B.S. Specn. 86s: 1950. Kent-Jones, Amos and Martin, 133. filtrates. N o k t z , 551. Copper-continued *electrode : Detmng. rare earths. McClelland, 392. "Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sher- rington, 17. "Gravimetric detmn. of -, iron, aluminium and titanium with N-benzoylphenylhydroxyl- amine. Shome, 27. "group: Qualitative separation of - and arsenic group. in aluminium *Photometric detmn. of - alloys with tetraethylene pentamine.Williams, 425. *Polarographic methods for analysis of fine chemicals. Osborn, 67 1. Corrosion : Interim Report of illinistry of Health Departmental Committee on Deterioration of Cast Iron and Spun Iron Pipes. (Pnblication received), 632. HoIness and Trewick, 276. "Corticoids : Hormone assay. *Corticotrophin : Hormone assay. *Cows' milk: Lactose and chloride contents of Egyptian - and buffaloes' milk. El-Sokkary and Hassan, 143. *Crawiish wastes : Estmng. chitin and chitin nitrogen in __ and derived products. Black and Schwartz, 185. Cream, syiithetic: Labelling of Food Order, 1950, 504. *Cream of tartar : Crystalline potassium hydrogen tartrate in tinned grapes. Manley and Xlcock, 280. *&eta praeparata: Gasometric estmn. of - in National flour.Fraser and Weston, 402. *Critical solution temperature : Detmng. purity of propylene glycol. Middleton and Stuckey, 406. Croydon: Appointment of T. E. Rymer as Deputy Public Analyst and Deputy Official Agricultural Analyst to County Borough of -, 564. Crystallographic data : Establishment of National Registry of Rare -. Armour Research Foundation, Illinois Institute of Technology, 340. Cumberland: Appointment of T. J. Cahill as Deputy Official Agricultural Analyst to County of -, 564; as Deputy Public Analyst, 690. "Cupric ions: Delicate test for - and ferric ions in aqueous solution. Bottomley, 501. Currants : Mineral Oil in Food (Amendment) Order, 1950, 504. Curry powder: Food Standard (-) Order, 1949, 112. "Cyanide : Simple detmn. of microgram amounts of -.Beerstecher, 280. "Test for volatile substances present in traces. Application to --. Hickinbotham, 502. Gadduni, 530. Gaddum, 530. D Dairozon : Agent for cleansing milk vessels. Ministries of Agriculture & Fisheries and Food. Circular MF 11/50, 504. Dairying : Dictionary of -, Davis. (Publication received), 566. Damson jam : Food Standards (Preserves) (Amend- ment) Order, 1950, 503. jelly: Food Standards (Preserves) (Amendment) Order, 1950, 503. Darlington: Appointment of T. J. Cahill as Deputy Public Analyst and Deputy Official Agricultural Analyst to County Borough of -, 393.INDEX TO VOLUME 75 DDT and Newer Persistent Insecticides. West and Campbell. 2nd Edn. (Publication received), 693. Delsanex : Agent for cleansing milk vessels. Ministries of Agriculture & Fisheries and 1:ood.Circular M F 11/50, 504. Deosdn : Agent for cleansing milk vessels. Ministries of Agriculture & Fisheries and Food. Circular M F 11/50, 504. Dewsbury: Appointment of J. C. Harral as Deputy Official Agricultural Analyst to County Borough *Dextrose : Identification and approximate estmn. of reducing sugars in presence of glucose. Rheinlander, 444; Erratum, 629. of -, 690. Diaceth: B.S. Specn. 1594: 1950, 393. Diacetone alcohol: B.S. Specn. 549: 1950, 393 *Dibromopropamidine : Detmng. propamidine and M & B 1270 (--) with pentacyanoammonio- ferrate. Trought, Ashton and Baker, 437. Dibutyl cresol : See Methyl ditertiary butyl phenol. Dibutyl phthalate: B.S. Specn. 573: 1950, 393. *Dichromate: Estmng. iron by -. Stockdale, 150.*Influence of glucose on diphenylamine indicators and on -- iron titrations. New assay of saccharated iron carbonate preparations. Bishop and Crawford, 273. Dictionary : German - English - for Chemists. Patterson. 3rd Edn. (Publication received), 693. of Dairying. Davis. (Publication received), 566. Thorpe's -~ of Applied Chemistry. Whiteley. 4th Edn. Vol. X : Plagioclase-Sodium. (Publication received), 632. *Diethy1 ether : Detmng. purity of propylene glycol. Middleton and Stuckey, 406. "Polarographic methods for analysis of fine chemicals. Osborn, 671. Diethyl phthalate: B.S. Specn. 574: 1950, 393. *Dioxan : Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Diphenylamine : Confirmatory test for presence of - in commercial petrol.*indicators: Influence of glucose on - and on dichromate - iron titrations. New assay of official saccharated iron carbonate preparations. Bishop and Crawford, 273. *Di-propylene glycol : Detmng. purity of propylene glycol. Middleton and Stuckey, 406. *Distilled liquors : Colorimetric detmn. of aldehyde in --. Gorfinkel and Skelton, 221. *Documents : Deciphering charred --. Radley, 628. Dried fixit: Mineral Oil in Food (Amendment) Order, 1050, 504. peas: Detmng. carotene in -. Franklin, Lyons and Wheeler, 49. Drinks : Soft - (Amendment) Order, 1950, 339. *Drug(s) analysis : Fluorescence microscopy as aid to food analysis and -. King and Weston, 397. *Chlorophyll for breaking emulsions in alkaloidal assays of solanaceous -. Edmundson and Wilkins, 169. Dumfries: Appointment of D.R. A. Davies as Additional Public Analyst to County and Burgh of -, 690. Bernard: First - Memorial lecture. *Dy%ussell, 240. *Dyes : Applications of modified technique in paper Hamence, 106. chromatography. Rutter, 37. E xvii E605 : See p-Nitrophenyl diethyl thiophosphate. Eccles : Appointment of A. Alcock as Public Analyst to Borough of -, 57. Editorial(s) : Cessation of publication of abstracts in The AnaZyst, 1. Publication of scheme for standardisation of volumetric solutions, 567. *Egg: Detmng. - in salad cream. I. Daubney and Sexton, 305. Elderberry jam : Food Standards (Preserves) (hmendment) Order, 1950, 503. jelly: Food Standards (Preserves) (Amendment) Order, 1950, 503, *Electro-deposition : Quantitative - of tin from chloride solutions.11. Stannous tin solutions. Lindsey, 104. "Emulsions : Chlorophyll for breaking - in alkaloidal assays of solanaceous drugs. Edmundson and Wilkins, 169. Encyclopaedia : Elsevier's - of Organic Chemistry. Radt. Vol. 12B, Part I. Series 111, Carbo- isocyclic Condensed Compounds. (Review), 630. Eschscholtzia : See Californian poppy. *Etching: Detmng. fluoride by -. Williams, Ethanol : See Ethyl alcohol. Ether: See Diethyl ether. Ethyl acetate: B.S. Specn. 553: 1950, 393. Ethyl alcohol: B.S. Specn. 507: 1950, 393. "Detmng. purity of propylene glycol. Middleton *Yolarographic methods for analysis of fine Ethyl lactate: B.S. Specn. 663: 1950, 393. "Ethylene: Titrimetric detmn. of ---, Miller and "Ethylene glycol: Detmng. purity of propylene 510. and Stuckey, 406.chemicals. Osborn, 671. Pearman, 492. glycol. Middleton and Stuckey, 406. F *Faeces: Nickel and molybdenum content of normal human urine and -. Tompsett and Fitzpatrick, 279. *Fat(s) : Detmng. horse- - in admixture with other -. Dalley, 336. Melting and Solidification of - and Fatty Acids. Bailey. (Publication received), 566. Methods of analysis of oils and -. B.S. Specn. 684: 1950, 393. Oils, - and Fatty Foods-Their Practical Examination. Williams. 3rd Edn. (Review), 505. Fatty Acids : Melting and Solidification of Fats and -. Bailey. (Publication received), 566. "Fermentation media : Critical factors in resorcinol reaction for detmng. fructose. Gray, 314. "Ferric ammonium sulphate : Standardising volu- metric solutions. Imperial Chemical Industries, Ltd., 577.*Ferric ions: Delicate test for cupric and - in aqueous solution. Bottomley, 501. *Ferrous alloys : Gelatin in detmng. silicon in -, especially silicon-rich ferro-alloys. Jenkins and Webb, 481. "Ferrous ammonium sulphate : Standardising volu- metric solutions. Imperial Chemical Industries, Ltd., 577. *Fertilisers : First Bernard Dyer memorial lecture. Russell, 240.xviii INDEX TO VOLUME 75 *Filters : Isolation of lines of mercury arc by -, with special reference t o photo-electric absorp- tiometry. Nicholas and Pollak, 662 ; Erratum, this index, p. iii. *Fine chemicals : Polarographic methods for analysis of -. Osborn, 671. Fish cakes : Food Standards (-) Order, 1950, 339. Flour($: (Amendment No. 3) Order, 1950, 564. Labelling of Food Order, 1950, 504. Calculation of botanical composition of wheat - and offals from chemical analysis.Straub, 142. *Experiments in photo-electric recording of - grade by measurements of reflecting power. Kent- Jones, Amos and Martin, 133. *Gasometric estmn. of creta praeparata in National -. *Photo-electric detmn. of colour of - as affected by grade, by measurements of reflecting power. Kent- Jones and Martin, 127. *Pressure cooking as aid in isolation of extraneous matters in cereal products. "Fluorescence microscopy as aid to food and drug analysis. King and Weston, 397. *Fluoride(s) : Detmng. - by etching. Williams, 510. *Micro-detmn. of fluorine based on examination of - - fluosilicate equilibrium. Rickson, 84. *Rapid photometric detmn. of silicofluoride in hydrofluoric acid, ammonium - , sodium - and soluble coloured -.Jewsbury, 256. *Fluorine: Micro-detmn. of - based on examina- tion of fluoride - fluosilicate equilibrium. Rick- son, 84. "Fluosilicate : Micro-detmn. of fluorine based on examination of fluoride - - equilibrium. Kickson, 84. *Food(s) analysis : Fluorescence microscopy as aid to ~ and drug analysis. King and Weston, 397. Chemical Analysis of --. Cox. 4th Edn. (Review), 284. Labelling of - Order, 1950, 504. Mineral Oil in - (Amendment) Order, 1950, 504. Oils, Fats and Fatty --Their Practical Examination. Williams, 3rd Edn. (Review), 505. Standards (Curry Powder) Order, 1949, 112. Standards (Fish Cakes) Order, 1950, 339. Standards (Preserves) (Amendment) Order, 1949, Standards (Tomato Ketchup) Order, 1949, 112. *Formaldehyde : Polarographic methods for analysis of fine chemicals. Osborn, 671.Formulary : National -. American Pharma- ceutical Assoc. 9th Edn. (Publication received), 693. "Fructose : Critical factors in recorcinol reaction for detmng. -. Gray, 314. *urea and -, acetone reactions as selective tests for sugars, Fruit : Citrus - (Amendment and Revocation) Order, 1950, 283. curd : Food Standards (Preserves) (Amendment) Order, 1949, 112. dried: Mineral Oil in Food (Amendment) Order, 1950, 504. juice: Labelling of Food Order, 1950, 504. juice: Soft Drinks (Amendment) Order, 1950, 339. *Furnark acid : Polarographic methods for analysis *Furfuraldehyde : Polarographic methods for analysis Fraser and Weston, 402. Freeland, 222. 112; Order, 1950, 503. Fearon and Drum, 56. of fine chemicals.Osborn, 671. of fine chemicals. Osborn; 671. *Galena : Dry assay of sulphides and oxides of lead *Gammexane : Polarographic methods for analysis Glasoline : See Petrol. *Gelatin in detmng. silicon in ferrous alloys, especially silicon-rich ferro-alloys. Jenkins and Webb, 481. Geology: Colonial - and Mineral Resources. Vol. I, No. 1. Germany : Pharmaceutical Industry in - during 1939-45. British Intelligence Objectives Sub- Committee Surveys Report No. 24. (Publica- tion received), 566. Ginger wine: Labelling of Food Order, 1950, 504. Glasgow: Appointment of R. S. Watson as Addi- tional Public Analyst to City of -, 111. *Glass, bursting strength of -: Detmng. sodium in calcined alumina and aluminium hydrates. Jackson, 414. *Glucose : Identification and approximate estmn.of reducing sugars in presence of sucrose. Rheinlander, 444; Erratum, 629. *Influence of - on diphenylamine indicators and on dichromate - iron titrations. New assay of official saccharated iron carbonate preparations. Bishop and Crawford, 273. Glyceryl diacetate: B.S. Specn. 1594: 1950, 393. *Gonadotrophins : Hormone assay. Gaddum, 530. Gooseberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. Gosport: Appointment of W. B. Chapman as Deputy Public Analyst to Borough of ---, 564. Grapefruit : Citrus Fruit (Amendment and Revoca- tion) Order, 1950, 283. Dickinson and Harris, 687. *Grapes : Crystalline potassium hydrogen tartrate in tinned -. *Grass(es) : Applications of modified technique in paper chromatography. Rutter, 37. Detmng. carotene in green-leaf material.I. Fresh -. Society of Public Analysts and Other Analytical Chemists, Analytical Methods Committee, Sub-committee on Vitamin Estmns., Carotene Panel, 568; Erratum, 686. *Great Britain : Analytical chemistry of bromine manufacture. 111. Survey of in-shore waters round coasts of -. Haslam and Gibson, 357. Great Yarmouth: Appointment of E. C. Wood as Public Analyst to County Borough of -, 283. Greengage jam: Food Standards (Preserves) (Amendment) Order, 1950, 503. Greenwich: Appointment of H. A. Williams as Public Analyst and A. P. Davson as Deputy Public Analyst to Metropolitan Borough of -, 57. Ground glass joints : Interchangeable conical -. B.S. Specn. 572: 1950, 340. *Growth hormones : Hormone assay. Gaddum, 530. H *Hairs: Fluorescence microscopy as aid to food and drug analysis.Heptalgin : See Phenadoxone. *n-Heptyl penicillin : Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper. Glister and Grainger, 310. and bismuth. Smythe, 21. of fine chemicals. Osborn, 671. (Publication received), 632. *juice: Paper test for citrus juices. Manley and Alcock, 280. King and Weston, 397.INDEX TO VOLUME 75 xix Hereford: Appointment of F. G. D. Chalmers as Public Analyst and D. C. E. Jenkins as Deputy Public Analyst to Borough of -, 283. Herefordshire: Appointment of M. E. D. Turner as Deputy Pubbc Analyst to County of -, 690. *€€omatropine hydrobromide : Colour test for cocaine. Rathenasinkam, 169. *Hormone assay: Introduction. Gaddum, 530; General approach to biological assays.Schild, 533; Measurement of thyroidal activity. Somers, 537; Assay of posterior pituitary lobe extracts. Stewart, 542. Hornchurch: Appointment of J . H. Hamence and G. Taylor as Public Analysts to Urban District of -, 57. *Horse-fat : Detmng. - in admixture with other fats. Dalley, 336. *Hortvet freezing-point: Investigations in examina- tion and on variations in composition of milk. I. Detmng. -. Sutton, Markland, Barra- clough and Chapman, 42. *thermometers : Standardisation of -. Sutton and Markland, 251; Erratum, 317. *Humidity : Testing atmospheric conditions in theatres and cinemas. Clark, 525. Huntingdon : Appointment of E. Voelcker as Official Agricultural Analyst to County of -, 564. *Hydrochloric acid : Application of radio-frequencies to conductimetric analysis (rectified radio- frequency method).Blake, 32. * S tandardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Hydrocyanic acid : Test for volatile substances present in traces. Application to cyanide. Hickinbotham, 502. *Hydrofluoric acid : Rapid photometric detmn. of silicofluoride in - , ammonium fluoride, sodium fluoride, and soluble coloured fluorides. Jewsbury, 256. *Hydrogen : Generator for air-free carbon dioxide or-. Tucker, 170. *Hydrogen peroxide : Polarographic methods for analysis of fine chemicals. *Spectrophotometric detmn. of small amounts of - in aqueous solutions. Ovenston and Rees, 204; Erratum, 405. *Hydrogen sulphide : Colorimetric detmn. of small amounts of - in effluent gases with Spekker absorptiometer. Ethrington, Warren and Marsden, 209.*Hydroxamic acid : Analysis of penicillin mixtures by paper chromatography of - derivatives. Baker, Dobson and Martin, 651. *p-Hydroxybenzyl penicillin : Modified rapid tech- nique for separation and detmn. of penicillin types by partition chromatography on paper. Glister and Grainger, 310. *&Hydroxyquinoline : Extraction and photometric estmn. of metals with -. Gentry and Sherrington, 17. Hyposan : Agent for cleansing milk vessels. Ministries of Agriculture & Fisheries and Food. Circular M F 11/50, 504. Osborn, 671. I *Indicators : Estmng. iron by dichromate. Stock- dale, 150. *Standardisation of volumetric solutions. Im- perial Chemical Industries, Ltd., 577. *Infra-red spectra of polymers : Examination of methyl methacrylate polymers and copolymers.Haslam and Soppt. 63. Inorganic Compounds : Structural Chemistry of -. Huckel. Vol. I. (Publication received), 632. Insecticides: DDT and Newer Persistent -. West and Campbell. 2nd Edn. (Publication received), 693. *Insects: Fluorescence microscopy as aid to food and drug analysis. *Insulin : Hormone assay. International Union of Pure and Applied Chemistry. Comptes rendus de la Quinzieme Conference, Amsterdam, 1949. (Publication received), 693. Section V-Analytical Chemistry. Membership, 509. *Invert sugar : Identification and approximate estmn. of reducing sugars in presence of sucrose. Rheinlander, 444; Erratum, 629. *Iodates : Polarographic methods for analysis of fine chemicals. Osborn, 67 1.*Iodide : Polarographic methods for analysis of fine chemicals. Osborn, 671. *Iodine : Standardising volumetric solutions. Im- perial Chemical Industries, Ltd., 577. Ipswich: Appointment of E. C. Wood as Public Analyst and Official Agricultural Analyst to County Borough of -, 564. *Iron : Applications of modified technique in paper chromatography. Rutter, 37. *Colorimetric detmn. of impurities in titanium metal. - and manganese. Corbett, 475. *Delicate test for cupric and ferric ions in aqueous solution. Bottomley, 501. *Detmng. ferrous - in silicates. Harris, 496. *Detmng. - by dichromate. Stockdale, 150. *Detmng. - , copper, lead and mercury in fabricated polyvinyl chloride. Rees, 160. "Detmng. small amounts of aluminium in -. Short, 420. *Extraction and photometric estmn.of metals with 8-hydroxyquinoline. Gentry and Sher- rington, 17. *Gelatin in detmng. silicon in ferrous alloys, especially silicon-rich ferro-alloys. Jenkins and Webb, 481. *Gravimetric detmn. of copper, -, aluminium and titanium with N-benzoylphenylhydroxyl- amine. Shome, 27. pipes: Interim Report of Ministry of Health Departmental Committee on Deterioration of Cast - and Spun - Pipes. (Publication received), 632. "Polarographic methods for analysis of fine chemicals. Osborn, 671. PrCcis d'Analyse Chimique des Aciers et des Fontes. Jean. (Review), 449. *Spot-tests for identifying alloying elements in copper-base alloys. Evans and Higgs, 19 1. *Iron carbonate : Influence of glucose on diphenyl- amine indicators and on dichromate - iron titrations.New assay of official saccharated - preparations. Bishop and Crawford, 273. Isle of Wight: Appointment of A. L. Williams as Public Analyst and W. B. Chapman as Deputy Appointment of A. L. Williams as bfficial Agricultural Analyst and W. B. Chapman as Deputy Official Agricultural Analyst to County Islington: Appointment of R. G. Minor as Deputy Public Analyst to Metropolitan Borough of -, 111. isoPropy1 alcohol: B.S. Specn. 1595: 1950, 393. Isotopic Carbon, Techniques in its Measurement and Chemical Manipulation. Calvin, Heidelberger, Reid, Tolbert and Yankwich. (Review), 113. King and Weston, 397. Gaddum, 530. Public Analyst to County of - 393 ; of -, 564.xx INDEX TO J Jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. Journals, new : Colonial Geology and Mineral Resources and Colonial Plunt and Animal Products.(Publications received), 632. Jurjsprudence : Taylor's Principles and Practice of Medical - . Smith, Cook and Stewart. 10th Edn. (Review), 395. K Karl Fischer Reagent: Chemical Analysis. Vol. V. Aquametry. Application of - to Quantita- tive Analyses involving Water. Mitchell and Smith. (Review), 114. Keighleg: Appointment of J. C. Harral as Public Analyst to Borough of -, 690. "Kerosine : Analysis of petrol - - mixtures, with specific reference to boiling-point. Manley, 604. Ketchup : Food Standards (Tomato -) Order, 1949, 112. *tomato: Estmn. of tomato solids in tomato products by estmng. lycopene by absorption spectroscopy. Stock, 117. tomato: Labelling of Food Order, 1950, 504. VOLUME 75 *Leather : Water-soluble matter in vegetable tanned -.Wyatt, 170. Leeds: Appointment of R. A. Dalley as Deputv Public Analyst and Deputy Official Agricui- tural Analyst to County Borough of -, 11 1 . Leicester: Appointment of E. R. Pike as Deputy Public Analyst to County Borough of --, 564. *Lemon juice: Paper test for citrus juices. Dickinson and Harris, 687. *Lime juice: Paper test for citrus juices. Dickinson and Harris, 687. Juice : Soft Drinks (Amendment) Order, 1950, 339. "Liquors : Colorimetric detmn. of aldehyde in distilled -. *Lithium hydroxide : Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. Loganberry jam : Food Standards (Preserves) Order, 1950, 603. Lowestoft: Appointment of E. C. Wood as Public Analyst to Borough of -, 283."Luminal : Detcng. phenyl barbiturates. Iiathena- sinkam, 108. *Lycopeae : Estmn. of tomato solids in tomato products by method involving estmn. of - by absorption spectroscopy. Stock, 117. Gorfinkel and Skelton, 221. *M L Labelling oi Food Order, 1050, 504. Laboratory and Workshop Notes. Lang. (Review), 115, Technique: Introduction to -. Ansley. 2nd Edn. (Publication received), 632. "Lacto bacillus helveticus : Microbiological assay of riboflavine in yeast and yeast products, - in 17-hour titrimetric method. Jones and Morris, 608. "Lactose and chloride contents of Egyptian cows' and buffaloes' milks. El-Sokkary and Hassan, 143. *Identification and approximate estmn. of reducing sugars in presence of sucrose. Rhein- lander, 444; Erratum, 629. Lancaster: Appointment of E.C. Wood as Public Analyst and A. Lees and G. H. Walker as Additional Public Analysts to Borough of -, 690. *Lead: Detmng. iron, copper, - and mercury in fabricated polyvinyl chloride. Rees, 160. *Detmng. small quantities of copper in - and - alloys. "Micro-gravimetric detmn. of - in bronzes. Miller and Currie, 471. "Micro-gravimetric detmn. of - in white metals, fusible alloys and tin-free copper-base alloys. Miller and Currie, 467. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. *Separating - and bismuth. Etheridge, 279. *Spot-tests for identifying alloying elements in copper-base alloys. *Lead oxides: Dry assay of sulphides and oxides of lead and bismuth. *Lead sulphide: Dry assay of sulphides and oxides of lead and bismuth.Willmott and Raymond, 24. Evans and Higgs, 191. Smythe, 21. Smythe, 21. M & B 12'70: Detmng. propamidine and - (dibromo-propamidine) with pentacyano- ammonioferrate. Trought, Ashton -and Baker, 437. "Maleic acid : Polarographic methods for analysis of fine chemicals. Osborn, 671. "Manganese : Colorimetric detmn. of impurities in titanium metal. Iron and -. Corbett, 476. *Extraction and estmn. of metals with S-hydroxy- quinoline. Gentry and Sherrington, 17. "Spot-tests for identifying alloying elements in copper-base alloys. *Magnesium : Absorptiometric detmn. of -. Hunter, 91. "Marc: Detmng. - content of fresh and dried sugar beets. Mitchell, 410. Marmalade : Food Standards (Preserves) (Amend- ment) Order, 1950, 503.*Meat extract : Microbiological assay of riboflavine in yeast and yeast products. Lactobacillus helveticus in 17-hour titrimetric method. Jones and Morris, 608. Medical Jurisprudence : Taylor's Principles and Practice of -. Smith, Cook and Stewart. 10th Edn. (Review), 395. Medicinal Products : Chemistry of Organic -. Jenkins and Hartung. 3rd Edn. (Review), 450. Melting and Solidification of Fats and Fatty Acids. Bailey. (Publication received), 566. :kMemorial lecture : First Bernard Dyer ---. Russell, 2.10. *Mercaptans : Amperometric titration of -. Strafford, Cropper and Hamer, 55. *Mercaptobenzthiaaole : Amperometric titration of mercaptans. Strafford, Cropper and Hamer, 55. *2-Mercapto-4 : 5-dimethylthiazole : Colorimetric detmn.of rhodium with -. * ,%Mercaptonaphthalene : Amperometric titration of mercaptans. Strafford, Cropper and Hamer, 65. Evans and Higgs, 191. Ryan, 557.INDEX TO VOLUME 75 xxi *Mercury arc: Isolation of lines of - by filters, with especial reference to photo-electric absorp- tjonietry. Nicholas and Pollak, 662 ; Erratum, this index, p. iii. "Detmng. iron, copper, lead and ___ in fabricated polyvinyl chloride. Rees, 160. *drop control. Application to derivative and differential polarography. Airey and Smales, 287. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. Merthyr Tydfil: Appointment of D. E. Jones as Official Agricultural Analyst to County Borough of -, 111. *Metals : Extraction and photometric estmn. of -- with 8-hydroxyquinoline.Gentry and Sher- rington, 17. "Methacrylate : Examination of methyl - polymers and copolymers. Haslam and Soppet, 63. Methyl alcohol: B.S. Specn. 506: 1950, 393. *I-Methyl-5-amino-acridine : Quantitative estmn. of -. Anderson and Lederer, 318. *p-Methylaminophenol sulphate : Colorimetric detmn. of p-aniinophcnol in -. Ballard, 430. *Methyl ditertiary bntyl phenol : Infra-red spectro- scopic estmn. of 4-methyl-2 :g-ditertiary butyl phenol in mixtures containing 2-methyl and 3-methyl-4: 6-ditertiary butyl phenols. Hales, 146. "Methyl methacrylate : Examination of - polymers and copolymers. Haslam and Soppet, 63. Metol : See p-Methylaminophenol sulphate. *1vIilk(s) : Absorptiometric detmn. of magnesium Hunter, 91. (Great Britain) (General Licence No.2) Order, 1950, 339. *Investigations in examination and on variations in composition of -. I. Detmng. Hortvet freezing-point. Sutton, Markland, Barraclough and Chapman, 42. *Lactose and chloride contents of Egyptian cows' and buffaloes' -. El-Sokkary and Hassan, 143. (Special Designation) (Pasteurised and Sterilised -) (Amendment) Regulations, 1950, 283. (Special Designation) (Raw -) (Amendment) Regulations, 1950, 283. "Standardising Hortvet thermometers. Sutton and Markland, 251; Erratum, 317. Use of - (Suspension of Restriction) Order, 1950, 339. vessels : Agents for cleansing. Ministries of Agriculture & Fisheries and Food. Circular M F 11/50, 504. Mincemeat : Food Standards (Preserves) (Amend- ment) Order, 1949, 112. Mineral(s) Resources : Colonial Geology and --.Vol. I, No. 1. *Sodium peroxide decomposition of - in platinum vessels. Rafter, 485. Mineral Oil in Food (Amendment) Order, 1950, 504. Ministry of Agriculture & Fisheries: Statutory Instruments, etc. : (Publication received), 632. Milk, 283. Milk vessels, 504. Acetic acid, 504. Alcoholic cordial, 504. Apple and blackberry jam, 503. Apple and blackcurrant jam, 503. Apple and damson jam, 503. Ministry of Food Orders, etc.: Ministry of Food Orders, etc.--coittinued Apple and plum jam, 503. Apple and raspberry and/or loganberry jam, 503. Apple and strawberry jam, 603. Apple jelly, 503. Apricot and peach jam, 503. Apricot jam, 503. Barley drink, 339. Bilberry jam, 503. Bitters, 504. Black beer, 504. Blackberry jam, 503. Blackberry jelly, 503. Bramble jam, 503.Bramble jelly, 503. Blackcurrant jam, 503. Blackcurrant jelly, 503. Cheese, 504. Cherry jam, 503. Christmas puddings, 504. Cider, 339. Citrus fruit, 283. Cream, synthetic, 504. Currants, 504. Curry powder, 11 2. Damson jam, 503. Damson jelly, 503. Dried fruit, 504. Elderberry jam, 503. Elderberry jelly, 503. Fish, 504. Fish cakes, 339. Flour, 564. Fruit curd, 112. Fruit juice, 504. Ginger wine, 504. Gooseberry jam, 503. Grapefruit, 283.. Greengage jam, 503. Jams, 503. Lime juice, 330. Loganberry jam, 503. Marmalade, 503. Milk, 283, 339. Milk vessels, 504. Mincemeat, 112. Nineral oil, 504. Nuts, 504. Orange wine, 504. Oranges, 283. Peach jams, 503. Perry, 339. Pineapple jam, 503. Plum and blackcurrant jam, 503. Plum and raspberry jam, 503. Plum and strawberry jam.503. Plum jam, 503. Plum jelly, 503. Preserves, 112, 503. Prunes, 504. Quince jelly, 503. Raisins, 504. Raspberry and gooseberry jam, 503. Raspberry and loganberry jam, 503. Raspberry and redcurrant jam, 503. Raspberry jam, 503. Raspberry jelly, 503. Redcurrant jelly, 503. Rhubarb and blackberry jam, 503. Rhubarb and raspberry jam, 603. Rhubarb jam, 503. Rum, 504. Soap, 448. Soda water, 339.xxii INDEX TO VOLUME 75 Ministry of Food Orders, etc.-continued Soft drinks, 339. Strawberry and gooseberry jam, 503. Strawberry jam, 503. Suet, shredded, 283. Sultanas, 504. Tomato ketchup, 112, 504. Tonic water, 339. Tonics, 504. Vegetable juice, 504. Vine fruits, 504. Wine, non-alcoholic, 339. Ministry of Health: Appointment of N. L. Allport as Analyst (Drug Testing) to -, 57.Interim Report of - Departmental Committee on Deterioration of Cast Iron and Spun Iron Pipes. (Publication received), 632. Molecules : Phenomena, Atoms, - . Langmuir. (Review), 630. *Molybdenum ti Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. *Nickel and - content of normal human urine and faeces. Tompsett and Fitzpatrick, 279. *Molybdenum sulphide : Dry assay of sulphides and oxides of lead and bismuth. Smythe, 21. *Monazite : Separation of thorium from ceria earths and application to analysis of --. Venka- taramaniah and Rao, 553. DL-6-Morpholino-4 : 4-diphenylheptan-3-one : See Phenadoxone. *Mushroom composts : Colorimetric detmn. of oxalate. Burrows, 80. *Mustard gas : Absorptiometric estmn.of - with iodoplatinate and starch. Allsopp, 281. N * /3-Naphthol : Selenious acid test for barbiturates. Parkes, 448. National Flour: Flour (Amendment No. 3) Order, 1950, 564. *Gasometric estmn. of creta praeparata in -. Fraser and Weston, 402. National Formulary : American Pharmaceutical Assoc. 9th Edn. (Publication received), 693. *Nickel and molybdenum content of normal human urine and faeces. Tompsett and Fitzpatrick, 279. *Applications of modified technique in paper chromatography. Rutter, 37. *Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sher- rington, 17. "Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Spot-tests for identifying alloying elements in copper-base alloys. "Nitrate : Modified 2 :4-xylenol method for - estmns.Barnes, 388. *Polarographic methods for analysis of fine chemicals. Osborn, 671. *Nitric acid : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. "Nitrite : Polarographic methods for analysis of fine chemicals. Osborn, 671. "Nitrobenzene : Polarographic methods for analysis of fine chemicals. Osborn, 671. *p-Nitrobenzyl derivatives of barbituric acids : Prepng. - on semi-micro scale. Lilliman, 626. Evans and Higgs, 191. *Nitrogen: Estmng. chitin and chitin ___ in crawfish waste and derived products. Black and Schwartz, 185. *Rapid micro-detmn. of - in organic substances by simple modification of Dumas method. Colson, 264. *p-Nitrophenyl diethyl thiophosphate : Analysis of -, E605, parathion. Gage, 189. Norfolk: Appointment of E.C. Wood as Public Analyst to County of -, 283. Northampton: Appointment of D. G. Allen as Deputy Official Agricultural Analyst to County Borough of -, 393. Northumberland : Appointment of T. J. Cahill as Deputy Public Analyst to County of -, 690. Norwich: Appointment of E. C. Wood as Official Agricultural Analyst to County Borough of Nuts: Labelling of Food Order, 1950, 504, -, 690. 0 Obituaries : Bennett, C. T., 230. Booth, N. P., 230. Bull, A. J., 341, Davies, W. R., 230. de Hailes, A. J., 230. Dutta, N. N., 230. Hallas, C. A., 633. Hanley, J ., 341. Hawley, J. W., 230, 231. Heald, J . A., 230. Hendrick, J., 230, 231. Hills, G. M., 633. Iyer, Y . V. S., 230. Keeley, E. C., 453 Lawson, G., 341. Pickard, Sir Robert, 230, 231. Rees, W. J., 341.Rendle, T., 453. Robertson, Sir Robert, 230, 231. Robinson, C. H., 230, 231. Skertchley, W. P., 230, 231. Stephenson, H. F., 230, 231. Thomson, K. T., 230, 231. Tribley, H. G., 341. *Oestrogens ; Hormone assay. Offals, wheat : Calculation of botanical composition of wheat flours and - from chemical analysis. Straub, 142. Oil(s): Cod - for sulphonation. B.S. Specn. 868: 1950, 449. Fats and Fatty Foods-Their practical Examina- tion. W-illiams. 3rd Edn. (Review), 505. Methods of analysis of - and fats. B.S. Specn. 684: 1950, 393. Technical compound cod-. B.S. Specn. 1582: 1050, 449. Vegetable -. B.S. Specns. 628-32 and 650-56: 1950, 284. Orange(s) : Citrus Fruit (Amendment and Revoca- tion) Order, 1950, 283. *juice: Paper test for citrus juices. Dickinson and Harris, 687.wine: Labelling of Food Order, 1950, 504. Organic Chemistry : Elsevier's Encyclopaedia of -. Radt. Vol 12B, Part I. Series 111, Carboisocyclic Condensed Compounds. (Re- view), 630. Chemistry: Technique of -. Vol. I. Physical Methods of A. Part 11. Weissberger. 2nd Edn. (Review), 172. Gaddum, 530.INDEX TO VOLUME 75 xxiii Organic-conlilzued Preparations : Anleitung zur Darstellung organischer Praparate mit kleinen Substanz- mengen. Lieb and Schoniger. (Publication received), 566. *Oxalate : Colorimetric detmn. of -. Burrows, 80. *Oxalic acid in detmng. ascorbic acid. Huelin, 391. *Oxidimetry : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. "0x0 : Microbiological assay of riboflavine in yeast and yeast products. Lactobacillus helveticus in 17-hour titrimetric method.Jones and Morris, 608. *Oxygen: Detmng. - in chromium metal. Short, 335. *Oxytocic hormone : Assay of posterior pituitary lobe extracts. Stewart, 542. *Oxytocin : Hormone assay. Gaddum, 530. P *Paper chromatography : Applications of modified technique in -. Rutter, 37. Parathion : See p-Nitrophenyl diethyl thiophosphate. *Parathyroid : Hormone assay. Peach jams : Food Standards (Preserves) (Amend- ment) Order, 1950, 503. *Peas : Detmng. carotene in dried -. Franklin, Lyons and Wheeler, 49. *Penicillin : Analysis of - mixtures by chromato- graphy of hydroxamic acid derivatives. Baker, Dobson and Martin, 651. *Modified rapid technique for separation and detmn. of - types by partition chromato- graphy on paper. Glister and Grainger, 310."Paper chromatography in - production control. Albans and Baker, 657. "procaine: Potentiometric detmn. of small amounts of procaine, sulphanilamide and related compounds by bromate - bromide titra- tion. Srinivasan, 76. 'Penicillinase : Detmng. - activity. Wise and Twigg, 106. "Pentacyanoammonioferrate : Detmng. propamidine and M & B 1270 (dibromopropamidine) with -. * A 2-Pentenyl penicillin : Modified rapid technique for separation and detmn. of penicillin types by partition chromatography on paper. Glister and Grainger, 310. 1669: 1950, 690. fine chemicals. Osborn, 671. Gaddum, 530. Trought, Ashton and Baker, 437. Perchlorethylene: R.S. Specn. 1593: 1950, 393. Perforated plates: Industrial -. B.S. Specn. *Peroxides : Polarographic methods for analysis of Perry: Soft Drinks (Amendment) Order, 1950, 339.*Petrol : Analysis of - - kerosine mixtures, with specific reference to boiling-point. Manley, 604. *Confirmatory test for presence of diphenylamine in commercial -. Ilamence, 106. pH: B.S. Specn. 1647: 1950. - scale, 449. Pharmaceutical Industry in Germany during 1939- 1945. British Intelligence Objectives Sub- Committee Surveys Report No. 24. (Publica- tion received), 566. Pharmacopoeia of United States of America. (Publication received), 566. *Phenacetin : Selenious acid test for barbiturates. Parkes, 448. *Phenadoxone : Detmng. - in urine. Page and King. 71: Erratum. 263. Phenomena, Atoms, Molecules. Langmuir. (Re- view), 630. *Phenyl barbiturates : Detcng. - . Rathena- sinkam, 108. *Phenyl mercuric acetate : Polarographic methods for analysis of fine chemicals.*Phosphorus : Photometric detmn. of - in low- alloy steels. Bacon, 321. *Spot-tests for identifying alloying elements in copper-base alloys. *Photo-electric absorptiometry : Isolation of lines of mercury arc by filters, with special reference to -. Nicholas and Pollak, 662; Erratum, this index, p. iii. *Phthalic acid as selective reagent for zirconium. Purushottam and Rao, 684. Physical Chemistry : Advanced Treatise on -. Partington. Vol. I : Fundamental Principles. Properties of Gases. (Review), 506. Outlines of -. Daniels. (Review), 507. Physical Methods in Chemical Analysis. Berle. Vol. I. (Review), 691. Technique of Organic Chemistry. Vol. I. - of Organic Chemistry. Weissberger. 2nd Edn. (Review), 172.Physico-Chemical Constants of Pure Organic Com- pounds. Timmermans. (Review), 691. *Picrolonates and calcium. Semi-micro volumetric detmn. with cetyl pyridinium bromide. Wash- brook, 621. Pineapple jam : Food Standards (Preserves) (Amend- ment) Order, 1950, 503. Pipes: Interim Report of Ministry of Health Departmental Committee on Deterioration of Cast Iron and Spun Iron -, (Publication received), 632. Pipettes: One-mark bulb -. B.S. Specn. 1583: 1950, 690. *Pitocin : Assay of posterior pituitary lobe extracts. Stewart, 542. "Pitressin : Assay of posterior pituitary lobe extracts. Stewart, 542. *Pituitary : Assay of posterior - lobe extracts. Stewart, 542. Plant: Colonial __ and Animal Products. Vol. I, No. 1. (Publication received), 632. *extracts : Applications of modified technique in paper chromatography.Rutter, 37. *structure : Fluorescence microscopy as aid to food and drug analysis. King and Weston, 397. *tissue extracts : Colorimetric micro-detmn. of calcium in -. McGregor, 211. 'tissues : Absorptiometric detmn. of magnesium. Hunter, 91. *Plasma : Attempts a t potentiometric detmn. of chloride in biological fluids with silver - silver chloride electrode. Duxbury, 679. Plastics : Cellulose Acetate --. Stannett. (Pub- lication received), 566. Chemistry of - and High Polymers. Ritchie. (Review), 566. Modern --. Barron. 2nd Edn. (Review), 227. Plates : Industrial perforated -. B.S. Specn. 1669: 1950, 690. *Platinum : Sodium peroxide decomposition of minerals in - vessels. Plum and blackcurrant jam: Food Standards (Preserves) (Amendment) Order, 1950, 503.and raspberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. and strawberry jam : Food Standards (Preserves) (Amendment) Order. 1950. 503. Osborn, 671. Evans and Higgs, 191. Rafter, 485.XXiV INDEX TO VOLUME 75 Plum-continued jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jelly: Food Standards (Preserves) (Amendment) Order, 1950, 503. Poisons : Analytical Chemistry of Industrial -, Hazards and Solvents. Jacobs. 2nd Edn. (Review), 508. *Polarographic cell: New - for routine) and research. Smith, 215. *cells with fused-in capillaries. *methods for analysis of fine chemicals. Osborn, 671. *PolarogPaphy : Mercury drop control. Application to derivative and differential -. Airey and Smales, 287.*Polycyclohexyl methacrylate : Examination of methyl methacrylate polymers and co-polymers. Haslam and Soppet, 63. *Polyethy1 acrylate : Examination of methyl meth- acrylate polymers and co-polymers. Haslam and Soppet, 63. Polymers: Chemistry of Plastics and High -. Ritchie. (Review), 566. *Examination of methyl methacrylate - and co- -. Haslam and Soppet, 63. High Polymeric Chemistry. Penn. (Review), 565. Modern Synthetic Rubbers. Barron. 3rd Edn. (Review), 508. *Polymethyl methacrylate : Examination of methyl methacrylate polymers and co-polymers. Haslam and Soppet, 63. *Polystyrene : Examination of methyl methacrylate polymers and co-polymers. Haslam and Soppet 63. *Polyvinyl chlorides : Detmng. iron, copper, lead and mercury in fabricated -. Port of London Authority: Appointment of N.L. Allport as Analyst to -, 57. Portsmouth: Appointment of W. B. Chapman as Deputy Public Analyst to County Borough of -, 393. *Posterior pituitary lobe extracts: Assay of -. Stewart, 542. *Potassium : Modification of cobaltinitrite method for absorptiometric detmn. of - in microgram range. Kenyon, Ovenston and Parker, 269. *Potassium bromate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Potassium dichromate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Potassium hydrogen tartrate : Crystalline - in tinned grapes. *Potassium permanganate : Standardising volu- metric solutions. Imperial Chemical Industries, Ltd., 577. Preparations : Anleitung zur Darstellung organischer Praparate mit kleinen Substanzmengen.Lieb and Schoniger. (Publication received), 566. Preserves : Food Standards (-) (Amendment) Order, 1949, 112; (-) Order, 1950, 603. *Pressure cooking as aid in isolation of extraneous matters in cereal products. Freeland, 222. *Procaine hydrochloride : Colour test for cocaine. Rathenasinkam, 169. *Potentiometric detmn. of small amounts of -, sulphanilamide and related compounds by bromate - bromide titration. Srinivasan, 76. Smith, 440. Rees, 160. Manley and Alcock, 280. Biochemical -. Carter, Vol. I, 57. *Progesterone : Hormone assay. Gaddum, 530. *Prolactin : Hormone assay. Gaddum, 530. *Prombal: Detcng. phenyl barbiturates. Rathena- sinkam, 108. *Propamidine : Detmng. - and M 62 B 1270 (dibromo- -) with pentacyanoammonio- ferrate. *Propylene glycol: Detmng.purity of -. Middleton and Stuckey, 406. *Proteins : Applications of modified technique in paper chromatography. Rutter, 37. "Micro-Kjeldahl detmn. of serum -, with selenium and copper as catalysts. Inter- relationship of time of digestion and con- stituents of digestion mixture. Levin, Ober- holzer and Whitehead, 561. Prunes: Mineral Oil in Food (Amendment) Order, 1950, 504. Publications received : Trought, Ashton and Baker, 437. American Pharmaceutical Assoc. National Formu- lary. 9th Edn., 693. Ansley. Introduction to Laboratory Technique. 2nd Edn., 632. Bailey. Melting and Solidification of Fats and Fatty Acids, 566. British Intelligence Objectives Sub-committee. Pharmaceutical Industry in Germany during Burn.Biological Standardisation, 566. Curtman. Introduction to Semi-micro Qualitative Davis. Dictionary of Dairying, 566. Elkins. Chemistry of Industrial Toxicology, 566. Harrison, Lord and Loofbourow. Practical Spectroscopy, 632. Hopkin and Williams, Ltd. Organic Reagents and Organic Analysis. Huckel. Structural Chemistry of Inorganic Compounds. Vol. I, 632. International Commission for Uniform Methods of Sugar Analysis. Report of Proceedings of Tenth Session, Brussels, 1949, 693. International Union of Pure and Applied Chemistry. Comptes Rendus de la Q5inzieme Conference, Amsterdam, 1949, 693. Kirk. Quantitative Ultramicroanalysis, 566. Kolthoff and Sandell. Textbook of Quantitative Inorganic Analysis. Revised Edn., 693. Lieb and Schdniger. Anleitung zur Darstellung organischer Praparate mit kleinen Substanz- mengen, 566.Mellon. Analytical Absorption Spectroscopy, 632. Patterson. German - English Dictionary for Chemists. 3rd Edn., 693. Pearse and Gaydon. Identification of Molecular Spectra. 2nd Edn., 693. Perry. Reports on Biological Standards. VI. Design of Toxicity Tests, 632. Stannett. Cellulose Acetate Plastics, 566. Timmermans. Physico-chemical Constants of Pure Organic Compounds, 566. West and Campbell. DDT and Newer Persistent Insecticides. 2nd Edn., 693. Whiteley. Thorpe's Dictionary of Applied Chemistry. 4th Edn. Vol. X: Plagioclase- Sodium, 632. Colonial Geology and Mineral Resources. Vol. I, No, 1, 632. Colonial Plant and Animal Products. Vol. I, No. 1, 632. Interim Report of Ministry of Health Depart- mental Committee on Deterioration of Cast Iron and Spun Iron Pipes, 632.Pharmacopoeia of United States of America, 666. See also: Book reviews. 1939-45, 566. Chemical Analysis, Revised Edn., 566. 2nd Edn., 693.INDEX TO VOLUME 75 xxv Puddings, Christmas : Labelling of Food Order, 1950, 504. *Pumps : Device for use with water-driven vacuum - to prevent water sucking back into apparatus. Booth, 499. *Puree, tomato: Estmn. of tomato solids in tomato products by method involving estmn. of lycopene by absorption spectroscopy. Stock, 117. tomato : Food Standards (Tomato Ketchup) Order, 1949, 112. Q Qualitative Analysis : ThCorie et Mbthode Nouvelle d’Analyse Qualitative. Charlot. 3rd Edn. (Review), 396. Chemical Analysis : Introduction to Semi-micro -. Curtman. Revised Edn.(Publication received), 566. *separation of copper and arsenic groups. E-Iolness and Trewick, 276. Quantitative Analysis : Mbthodes Modernes d’Analyse Quantitative Minbrale. Charlot and Bbzier. 2nd Edn. (Review), 631. Analysis : Textbook of Quantitative Inorganic Analysis. Kolthoff and Sandell. Revised Edn. (Publication received), 693. Ultramicroanalysis. Kirk. (Publication re- ceived), 566. Quince jelly: Food Standards (Preserves) (Amend- ment) Order, 1950, 503. R Radioactive Indicators. Application in Bio- chemistry, Animal Physiology and Pathology. Hevesy. (Review), 565. *Radio-frequencies : Application of - to con- ductimetric analysis. Blake, 689. *Application of - to conductimetric analysis (rectified radio-frequency method). Blake, 32. *Ramnose : Chromatographic detmn.of - in raw sugars. Raisins: Mineral Oil in Food (Amendment) Order, 1950, 504. *Rare earths: Detmng. -. McClelland, 392. Raspberry and gooseberry jam: Food Standards (Preserves) (Amendment) Order, 1950, 503. and loganberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. and redcurrant jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jelly : Food Standards (Preserves) (Amendment) Order, 1950, 503. Reactions : Chemistry of Specific, Selective and Sensitive -. Feigl. Translated by Oesper. (Review), 394. Reagents: Organic - and Organic Analysis. Hopkin and Williams, Ltd. 2nd Edn. (Pub- lication received), 693. Redcurrant jelly : Food Standards (Preserves) (Amendment) Order, 1950, 503.*Refractory : Detmng. chromium in chromite. 111. Detmng. chromium in standard sample of U.S. National Bureau of Standards chrome - No. 103 by selected methods. Bryant and Hardwick, 12. Albon and Gross, 454. *Relish, tomato: Estmng. tomato solids in tomato products by detmng. lycopene by absorption spectroscopy. Stock, 117. tomato : Food Standards (Tomato Ketchup) Order, 1949, 112. tomato: Labelling of Food Order, 1950, 504. *Resorcinol: Critical factors in - reaction for detmng. fructose. Gray, 314. ‘Selenious acid test for barbiturates. Parkes, 448. Reviews, see Book reviews. *Rhodium: Colorimetric detmn. of - with 2-mercapto-4 : 5-dimethylthiazole. Ryan, 557. Rhubarb and blackberry jam: Food Standards (Preserves) (Amendment) Order, 1950, 503.and raspberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. *Riboflavine : Microbiological assay of - in yeast and yeast products. Lactobacillus helveticus in 17-hour titrimetric method. Jones and Morris, 608. *Rubbers: Estmng. thickness of wax bloom on vulcanised -. Modern Synthetic -. Barron. 3rd Edn. (Review), 508. sinkam. 108. Kendall and Phillips, 74. Rum: Labelling of Food Order, 1950, 504. *Rutonal : Detcng. phenyl barbiturates. Rathena- S *Saccharated iron carbonate : Influence of glucose on diphenylamine indicators and on di- chromate - iron titrations. New assay of official - preparations. Bishop ,and Craw- ford, 273. *Saccharomyces carlsbergensis : 24-hour plate assay technique for vitamin B, complex of yeast.Jones and Morris, 613. *Salad cream: Detmng. egg in -. I. Daubney and Sexton, 305. *Salicylic acid : Selenious acid test for barbiturates. Parkes, 448. *Salt : Analytical chemistry of bromine manufacture. 11. Bromine content of Cheshire - deposit and of some borehole and other brines. Haslam, Allberry and Moses, 352. *Sauce, tomato: Estmn. of tomato solids in tomato products by method involving estmn. of lycopene by absorption spectroscopy. Stock, 117. tomato : Food Standards (Tomato Ketchup) Order, 1949, 112. tomato: Labelling of Food Order, 1950, 504. *Sea water : Analytical chemistry of bromine manu- facture. 111. Survey of in-shore waters round coasts of Great Britain. Haslam and Gibson, 357. *Sebacic acid: Separating adipic acid and -.Wise, 219; *Haslam and Clasper, 688. *Secretin: Hormone assay. Gaddum, 530. *Selenious acid test for barbiturates. Parkes, 448. *Serum proteins : Micro-Kjeldahl detmn. of -, with selenium and copper as catalysts. Inter- relationship of time of digestion and constituents of digestion mixture. Levin, Oberholzer and Whitehead, 561. Shemeld: Appointment of H. Childs as Public Analyst and A. 0. Jones as Deputy Public Analyst to County Borough of -, 283.xxvi INDEX TO VOLUME 75 Shredded Suet (Revocation) Order, 1950, 283. *Silica : Rapid photometric detmn. of silicofluoride in hydrofluoric acid, ammonium fluoride, sodium fluoride and soluble coloured fluorides. Jewsbury, 256. "Silicates: Detmng. ferrous iron in -. Harris, 496. *Silicofluoride : Rapid photometric detmn.of - in hydrofluoric acid, ammonium fluoride, sodium fluoride and soluble coloured fluorides. Jewsbury, 256. *Silicon: Gelatin in detmng. - in ferrous alloys, especially - -rich ferro-alloys. Jenkins and Webb, 481. *Spot-tests for identifying alloying elements in copper-base alloys. *Silver - silver chloride electrode: Attempts a t potentiometric detmn. of chloride in biological fluids with -. Duxbury, 679. *Standardking volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Silver chloride : Direct electrolysis of copper from - filtrates. Nonvitz, 551. *Silver nitrate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. Soap (Licensing of Manufacturers and Rationing) Order, 1950, 448. Society of Public Analysts and Other Analytical Chemists : Analytical Methods Committee.Appointment of Sub-committee on Detmn. of Egg Yolk Solids in Salad Cream, Mayonnaise and any other Salad Dressing, 61. -4nalytical Methods Committee, Sub-committee on Vitamin Estmns., Carotene Panel. Detmng. carotene in green-leaf material. I. Fresh grass, 568; Erratum, 686; *Bibliography on carotene estmn. with special reference to green-leaf material. Gridgeman, 574. Annual General Meeting, 229. Annual Report of Council, 230. Appointment of Committees and Sub-Committees, 1950, 285. Biological Methods Group. Fifth Annual General Meeting, 62. Extraordinary General Meetings. Alteration of certain Articles of Association and proposed change of name of the Society, 61. Microchemistry Group. Arrangements for 1951, 693. Microchemistry Group.Sixth Annual General Meeting, 61. North of England Section. Twenty-fifth Annual General Meeting, 117. Physical Methods Group. Fifth Annual General Meeting, 62. Representatives of the Society on Committees of other Bodies, 342. Scottish Section. Fifteenth Annual General Evans and Higgs, 19 1. Meeting, 61. Soda water : Soft Drinks (Amendment) Order, 1960, 339. *Sodium: Detmng. - in calcined alumina and aluminium hydrates. Jackson, 414. *Sodium arsenite : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Sodium carbonate : Standardising volumetric solu- tions. Imperial Chemical Industries, Ltd., 577. *Sodium chloride : Standardising volumetric solu- tions. Imperial Chemical Industries, Ltd., 577."Sodium fluoride : Rapid photometric detmn. of silicofluoride in hydrofluoric acid, ammonium fluoride, __ and soluble coloured fluorides. Jewsbury, 256. *Sodium hydroxide : Standardising volumetric solu- tions. ImperiaI Chemical Industries, Ltd., 577. Sodium hypochlorite : Agents for cleansing milk vessels. Ministries of Agriculture & Fisheries and Food. Sodium peroxide decomposition of minerals in platinum vessels. Rafter, 485. *Sodium thiosulphate : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577. Soft Drinks (Amendment) Ordkr, 1950, 339. *Soil(s) extracts : Absorptiometric detnin. oi magnesium. Hunter, 91. *First Bernard Dyer Memorial lecture. Russell, 240. "Solanaceous drugs : Chlorophyll for breaking emulsions in alkaloidal assays of --.Edmundson and Wilkins, 169. Solidification: Melting and - of Fats and Fatty Acids. Bailey. (Publication received), 566. Solvents : Analytical Chemistry of Industrial Poisons, Hazards and -. Jacobs. 2nd Edn. (Review), 508. Somerset : Appointment of W. A. Cregeen as Deputy Public Analyst to County of -, 111. South Shields: Appointment of T. J. Cahill as Deputy Public Analyst and Deputy Official Agricultural Analyst to County Borough of Southampton: Appointment of D. G. Allen as Deputy Public Analyst to County of -, 11 1 ; Erratum, 283. Spectra : Identification of Molecular -. Pearse and Gaydon. 2nd Edn. (Publication received), 693. Spectrochemical Analysis : Chemische Spektral- analyse. Eine Anleitung zur Erlernung und Ausfuhrung von Spektralanalysen im Chemischen Laboratorium.Seith and Ruthsrdt. 4th Edn. (Review), 114. Spectrographic Analysis: Terms Used in -. Part I. Emission Spectrography. B.S. Specn. 1636: Part 1:1950. (Review), 450. Spectrophotometry : Absorption -. Lothian. (Review), 59. Spectroscopy : Analytical Absorption -. Mellon. (Publication received), 632. Practical -. Harrison, Lord and Loofbourow. (Publication received), 632. Standardisation : Biological -. Burn. (Publica- tion received), 566. Standards: Food - (Curry Powder) Order, 1949, 112. Food -- (Fish Cakes) Order, 1950, 339. Food -- (Preserves) (Amendment) Order, 1949, Food - (Tomato Ketchup) Order, 1949, 112. Reports on Biological -. VI. Design of Toxicity Tests. Perry. (Publication received), 632. *Stannous sulphide : Dry assay of sulphides and oxides of lead and bismuth.Smythe, 21. *Stannous tin : Quantitative electro-deposition of tin from chloride solutions. 11. - solutions. Lindsey, 104. *Steel(s) : Estmng. small amounts of carbon in -. Gardner, Rowland and Thomas, 173. "Gelatin in detmng. silicon in ferrous alloys, especially silicon-rich ferro-alloys. Jenkins and Webb, 481. Circular MF 11/50, 504. -, 564. 112; - Order, 1950, 503.INDEX TO VOLUME 75 xxvii St eel( s)--continued *Photometric detmn. of phosphorus in low-alloy ---, Bacon, 321. Precis d'Analyse Chimique des Aciers et des Fontes. Jean. (Review), 449. 'Sterols : Observations on spectrophotometric estmn. of vitamin D. Cox, 521. Stockton-on-Tees : Appointment of T. J . Cahill as Deputy Public Analyst to Borough of -, 564.Strawberry and gooseberry jam : Food Standards (Preserves) (Amendment) Order, 1950, 503. jam: Food Standards (Preserves) Order, 1950,503. Stretford: Appointment of A. Alcock as Public Analyst to Borough of -, 57. *Strontium : Polarographic methods for analysis of fine chemicals. Osborn, 671. Structural Chemistry of. Inorganic Compounds. Huckel. Vol. I. (Publication received), 632. *Sucrose : Identification and approximate estmn. of reducing sugars in presence of -. Rhein- lander, 444; Erratum, 629. *Selenious acid test for barbiturates. Parkes, 448. Suet: Shredded - (Revocation) Order, 1950, 283. Sugar(s) Analysis: Report of Proceedings of Tenth Session of International Commission for Uniform Methods of -, Brussels, 1949. (Publication received), 693. *beets: Detmng.marc content of fresh and dried -. Mitchell, 410. *Chromatographic detmn. of raffinose in raw -. Albon and Gross, 454. Confectionery: Chocolate, - and Cocoa Products (Amendment No. 3) Order, 1950, 629. *Fructose urea and fructose acetone reactions as selective tests for --. Fearon and Drum, 56. "Identification and approximate estmn. of reducing - in presence of sucrose. Rhein- lander, 444; Erratum, 629. *Sulphanilamide : Potentiometric detmn. of small amounts of procaine, - and related com- pounds by bromate - bromide titration. Srini- vasan, 76. *Sulphonamides : Potentiometric detmn. of small amounts of procaine, sulphanilamide and related compounds by bromate - bromide titra- tion. Srinivasan, 76. *Sulphuric acid : Standardising volumetric solutions. Imperial Chemical Industries, Ltd., 577.Sultanas : Mineral Oil in Food (Amendment) Order, 1950, 504. Surrey: Appointment of T. E. Rymer as Deputy Public Analyst to County of -, 393; as Deputy Official Agricultural Analyst, 564. Swindon: Appointment of M. E. D. Turner as Public Analyst to Borough of --, 690. Synthetic Rubbers: Modern -. Barron. 3rd Edn. (Review), 508. T *Tannin in estmn. of zirconium and separation from thorium. Purushottam and Rao, 555. *Tantalum : Extraction and photometric estrnn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. *Tartrate : Crystalline potassium hydrogen - in tinned grapes. Technique : Introduction to Laboratory -. Ansley. 2nd Edn. (Publication received), 632. *Tellurium : Polarographic methods for analysis of fine chemicals.Osborn, 67 1. Manley and Alcock, 280. *Temperature : Testing atmospheric conditions in theatres and cinemas. Clark, 525. *Tetraethylene pentamine: Photometric detmn. of copper in aluminium alloys with -. Williams, 425. *Theatres : Testing atmospheric conditions in __ and cinemas. Clark, 525. *Theobromine: Detmng. ___ in cocoa products. Holmes, 457. *Thermometers : Standardising Hortvet -. Sutton and Markland, 251; Erratum, 317. Thiamine : See Aneurine. "Thiomersalate : Polarographic methods for analysis of fine chemicals. Osborn, 671. *Thorium: Separation of - from ceria earths and application to analysis of monazite. Venkataramaniah and Kao, 553. *Tannin in estmn. of zirconium and separation from -. Purushottam and Rao, 555. *Thyroid : Hormone assay. *Thyroidal activity : Measuring -.Somers, 537. *Thyrotrophin : Hormone assay. *Thyroxine : Measuring thyroidal activity. Somers, 537. *Tin : Detmng. antimony and - in cable sheathing alloys. Black, 166. *Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sher- rington, 17. "Polarographic methods for analysis of fine chemicals. Osborn, 67 1. *Qualitative separation of copper and arsenic groups. Holness and Trewick, 276. *Quantitative electro-deposition of - from chloride solutions. 11. Stannous - solutions. Lindsey, 104. *Spot-tests for identifying alloying elements in copper-base alloys. *Tinned grapes : Crystalline potassium hydrogen tartrate in -. *Titanium : Colorimetric detmn. of impurities in - metal. Iron and manganese. Corbett, 475. *Gravimetric detmn. of copper, iron, aluminium and ~ with N-benzoylphenyihydroxylamine. Shome, 27. "Titanous chloride : Standardising volumetric solu- tions. Imperial Chemical Industries, Ltd., 577. *Titanow sulphate : Standardising volumetric solu- tions. Imperial Chemical Industries, Ltd., 577. *Tomato: Estmn. of - solids in - products by method involving detmn. of lycopene by absorption spectroscopy. Stock, 117. Ketchup: Food Standards (-) Order, 1949, 112. Ketchup: Labelling of Food Order, 1950, 504. Tonic water : Soft Drinks (Amendment) Order, 1950, Tonics: Labelling of Food Order, 1950, 504. Toxicity : Reports on Biological Standards. VI. Design of - Tests. Perry. (Publication received), 632. Toxicology : Chemistry of Industrial -. Elkins. (Publication received), 566. *Trichloroacetic acid : Detmng. - in urine. Frant and Westendorp, 462. Trichlorethylene: B.S. Specn. 580: 1950, 393. *Detmng. trichloroacetic acid in urine. Frant and Westendorp, 462. *Triphenylmethylarsonium iodide : Micro-estmn. of cadmium. Dwyer and Gibson, 201. *Tungsten : Extraction and photometric estmn. of metals with 8-hydroxyquinoline. Gentry and Sherrington, 17. Gaddum, 530. Gaddum, 530. Evans and Higgs, 191. Manley and Alcock, 280. 339.INDEX TO U "Uranium : Effect of bicarbonate on colorimetric detmn. of -. Scott, 100. *Urea : Fructose - and fructose acetone reactions as selective tests for sugars. Fearon and Drum, 56. *U.S. National Bureau of Standards: Detmng. chromium in chromite. 111. Detmng. chromium in standard sample of - chrome refractory No. 103 by selected methods. Bryant and Hardwick, 12. *Urine: Detmng. phenadoxone in -. Page and King, 71; Erratum, 263. "Detmng. trichloroacetic acid in -. Frant and Westendorp, 462. *Nickel and molybdenum content of normal human - and faeces. Tompsett and Fitzpatrick, 279. V Vanadium : Polarographic methods for analysis of *Vasopressin : Hormone assay. *Vasopressor hormone : Assay of posterior pituitary Vegetable juice: Labelling of Food Order, 1950, 504. oils: B. S. Specns. 628-32 and 650-56 : 1950, *structure : Fluorescence microscopy as aid to King and Weston, Ventilation : Testing atmospheric conditions in Vine fruits: Labelling of Food Order, 1950, 504. Vinegar: Ministry of Food Circular M F 15/50, 564. Vitamin B,: See Aneurine. *Vitamin B,: 24-Hour plate assay technique for - complex of yeast. Jones and Morris, 613. *Vitamin D : Observations on spectrophotometric estmn. of -. Cox, 621. Vitaminology. Eddy. (Review), 395. *Volumetric solutions : Standardisation of -. Imperial Chemical Industries, Ltd., 577. fine chemicals. Osborn, 671, Gaddum, 530. lobe extracts. Stewart, 542. 284. food and drug analysis. 397. theatres and cinemas. Clark, 525. W ''W" Flour: Flour (Amendment No. 3) Order, 1950, 564. Wslsall: Appointment of F. D. G. Chalmers as Deputy Public Analyst and D. C. Jenkins as Public Analyst to County Borough of -, 111. Warwickshire: Appointment of D. C. Jenkins as Public Analyst to County of -, 111. *Water@) : Analytical chemistry of bromine manu- facture. 111. Survey of in-shore - round coasts of Great Britain. Haslam and Gibson, 357. Chemical Analysis. Vol. V. Aquametry. Application of Karl Fischer Reagent to Quantitative Analyses involving -. Mitchell and Smith. (Review), 114. VOLUME 75 Water (s)-continued *Detmng. residual chlorine in -. Houghton, 180. *-soluble matter in vegetable tanned leather. Wyatt, 170. "Standardking volumetric solutions. Imperial Chemical Industries, Ltd., 577. *Wax bloom : Estmng. thickness of - on vulcanised rubbers. Kendall and Phillips, 74. West Hartlepool: Appointment of T. J . Cahill as Deputy Public Analyst and Deputy Official Agricultural Analyst to County Borough of West Suffolk: Appointment of E. C. Wood as Public Analyst to County of -, 690. Westmorland: Appointment of T. J . Cahill as Deputy Public Analyst and Deputy Official Agricultural Analyst to County of -, 393. Wheat : Calculation of botanical composition of - flours and offals from chemical analysis. Straub, 142. *Fluorescence microscopy as aid to food and drug analysis. King and Weston, 397. *White metal : Micro-gravimetric detmn. of lead in -, fusible alloys and tin-free copper-base alloys. Miller and Currie, 467. Wigtown: Appointment of D. R. A. Davies as Additional Public Analyst to County of -, 690. Wine, non-alcoholic : Soft Drinks (Amendment) Order, 1950, 339. Workshop: Laboratory and - Notes. Lang. (Review), 115. , 564. - X '2 : CXylenol : Modified - method for nitrate estmns. Barnes, 388. Y *Yeast : 24-Hour plate assay technique for vitamin B, complex of -. Jones and Morris, 613. *Microbiological assay of riboflavine in - and I_ products. Lactobacillus helveticus in 17-hour titrimetric method. Jones and Morris, 608. *Yohimbine : New qualitative reaction for -. Malowan, 338. Yorkshire: Appointment of A. Smith as Deputy Public Analyst to East Riding of -, 111. *Yttrium : Detmng. rare earths. McClelland, 392. Z *Zinc: Polarographic methods for analysis of fine *Spot-tests for identifying alloying, elements in *Zirconium: Phthalic acid as selective reagent for *Tannin in estmn. of - and separation from chemicals. Osborn, 67 1. copper-base alloys. Evans and Higgs, 191. -. Purushottam and Rao, 684. thorium. Purushottam and Rao, 556.