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Isssued 12/2/02 PROCEEDINGS OF THR CHEMICAL SOCIETY. BD?5”ED BY THE SECRETARIES. Vol. 18. No.246. February 6th, 1902. Dr. ARMSTRONG,Vice-president, in the Chair. Messrs. E. L. Shermood and A. G. Aston were formally admitted Fellows of the Society. Certificates were read for the first time in favour of Messrs. Frederic Guy Stirling Baker, Marrgatts Lodge, Snaresbrook, Essex ; Richard Blenkinsop, Garden Wharf, Battersea, S.W. ; Alexander Bruce, 10, Portland Terrace, Plumstead, S.E. ; Fred Carrodus, Glen Fern Tower, Lansdowne Road, Wimbledon, S.W. ;James Codrington Crocker, 2, Flynore Villas, Swansea ; Gilbert Gunn, 209, Rochdale Road, Bury, Lancs. ;Frank Eustace King, Woodbury, Polworth Road, Streatham, S.W.;A. Lionel Landau, 20, Highbury New Park, N.; Charles Henry Lockitt, 5,Harley Road, S.Hampstead, N.W. ; Walter Ramshaw, 5, Fronwen Terrace, Brecon ; William Scholes, 151, Ainsworth Road, Radcliffe, Lancs. ;Arthur Lea Butler Tindall, 41, Suunyside Road, Ilford ; Edward John Wilkinson, 8, Blenheim Terrace, Leeds ; Thomas A. Young, 318, Chetham Hill Road, Man-Chester ;Cecil Revis, 77, King Street, West Hammersmith, W. Of the following papers, those marked * were read : “10. (‘Conversion of 1-hydroxycamphene into P-halogen deriva-tives of camphor.” By 1111. 0. Forster. /3-Bromocamphor, obtained by the action of bromine on 1-hydroxy camphene (Pmc., 1901, 17, 245), yields camphor when reduced with 26 zinc dust and acetic acid, and is hydrolysed by alcoholic potash, form- ing a-campholenic acid.The oxime remains indifferent to alcoholic potash, and is not converted into a nitrile under the influence of mineral acids ; it yields a benxoyl derivative which crystallises from alcohol in silky needles melting at 71-73". P-Chlorocamphor, C,,H,,OCI, prepared from 1-hydroxycamphune and chlorine in acetic acid containing sodium acetate, crystallises from alcohol in long, slender prisms melting at 132.5" ; it has [:aID= + 39.5' in chloroform, and [.ID = + 40.7" in alcohol. The oxime is isomor- phous with P-bromocamphoroxime, and melts at 134' ; the Benzoyl derivative crystallises in silky needles melting at 86". P-Chlwo-a bromocumphor, CloH140ClBr,produced by the action of bromine on P-chlorocamphor, crystallises from petroleum in tabular aggregates of white prisms, and melts at 101'; it has [aID= + 126.5" in chloroform.The methyl elher of 1-hydroxycamphene, C,,H,,*OCH,, formed when the hydroxy-compound is heated with methyl iodide and dry silver oxide, is a colourless, limpid oil which boils at 193-194', has sp. gr. 0.9314 at ZOO, and [a], = -27.3'. The ethyl ether, Cl,H15*OC2H,, resembles the lower homologue, and boils at 203-204" ; bromine con-verts it into P-bromocamphor. *ll. 4r The induenoe of temperature on association in benzene solution and the value of the molecular rise of boiling point for benzene at different temperatures." By W. R. Innes. M.Sc., Ph.D. The molecular rise of boiling point at different temperatures was determined by introducing phenanthrene, benzophenone, and bend into benzene, boiling under reduced, atmospheric, and increased pressure.A constant pressure was maintained during each series of experiments at reduced or increased pressure by means of an automatic electri- cally controlled regulator. The molecular rise of boiling point (7) was also calculated (a) from the heat of vaporisation by means of van't Hoff's formula, ~OOT=RT~/L(calculated A) and (6) from the rate of change of vapour pressure with temperature by means of the equation 100~=Mp-in which iW is the molecular weight of12 benzene and p the mean pressure (calculated B). The calculated molecular rise and the mean experimental values found for concen-trations up to 6/100 gram-molecules per 100 grams benzene are given in Table I : 27 TABLEI.Temperature. 54". 58". 63". 73". 80". 3O. Calculated A ... 21.6 22.2 23.0 25.0 26.5 29.5 Calculated B ... 21.05 21.6 22.4 24-25 25.5 27.8 Phenanthrene ... 22.0 -22.4 23-55 25-25 27.3 Benzophsnone ,.. 20.17 -21*6 23.0 23-8 26.2 Benzil ............ -21.0 --23.3 26-24 The molecular rise calculated from the heat of vaporisation is greater than that calculated from the vapour pressure, the difference increasing with increase of temperature. The values found, using phenanthrene as the dissolved substance, agree very closely with those calculated from the rate of change of vaponr pressure. The closely related substances benzophenone and benzil give numbers for the molecular rise which are almost identical. The molecular rise for benzophenone is about 0.8 less than that for phenanthrene at the same temperatures.Series of determinations were carried out at different temperatures with the abnormal substances benzoic acid, o-bromobenzoic acid, fl-bend monoxime and dimethyl tartrate. It was found that the dissociation of the complex molecules increased with the temperature between 54O and 80' iu every case. Between 80° and 93O there was an apparent decrease of dissociation at all concentrations with benzoic acid and P-benzil monoxime ; o-bromobenzoic acid and dimethyl tartrate were more dissociated at 93' in dilute sdutions, but in more concentrated solutions the molecular weights became equal to those at 80° with the former substance and greater with the latter.The heats of dissociation (& gram calories) of P-benzil monoxime, o-bromobenzoic acid and benzoic acid were calculated from the mole- cular weights at different temperatures and found to be of the same order as those of a number of typical dissociating gases. Table I1 gives the values calculated ; V is the volume in litres occupied by the benzene in which 1 gram-molecule of the substance, calculated as double molecules, is dissolved : TABLEIT, Substance. TP TP 17. Q./3-Benzil monoxime ...... 278 331 13 14600 9, ...... 331 353 14 19900 o-Bromobenzoic acid ...... 331 353 8.18 7500 7) ...... 331 353 12.8 5300 Benzoic acid ............... 336 353 8.18 32800 28 The heat of dissociation of nitrogen tetroxide is 28900 cal., iodine vapour 28500 cal., acetic acid 20000 cal.and dimethyl ether hydro- chloride 8600 cal. DISCUSSION. In reply to questions by Dr. TRAVERS, said that several Dr. INNE~ series of determinations of the molecular rise of boiling point were made; there was very satisfactory agreement in every case. The series with abnormal substances at 93’ was not repeated, but the fact that the molecular weight of all four substances was higher than might have been expected seemed to show that the anomalous results at this temperature are not due to ordinary experimental error, whilst from the values obtained for the molecular rise of boiling point it appears that they are not due to a constant error in the method.*12. The magnetic rotation of ring compounds ;camphor, limonene, carvene, pinene and some of their derivatives.” By W,E. Perkin, sen., Ph.D., F.R.S. The remarkable differences between the magnetic rotations of satu-rated closed chain or ring compounds, such as the derivatives of tri, tetra-, peuta- and hexa-methylene, and the open chain compounds of the aliphatic series, both unsaturated and saturated, were first referred to, the ring compounds having a much lowev rotation than those which have unsaturated open chains, but the same composition; their rotation is also smaller than that of the saturated open chain compounds from which they differ in composition by -H2. On comparing the magnetic rotation of the mono- and di-carboxylic acids and ketones of the closed chain compounds mit.h those of the corresponding saturated open chain aliphatic compounds containing the same number of carbon atoms, considerable discrepancies were observed in the amounts by which they differ from each other, which range from about 0.33 to 0.64, and this want of accord has hitherto been an enigma, but it is now found that this is due to the comparisons having been made between the wrong members of the two series.If tri-, tetra-, penta- and hexa-methylene be taken as the first, second, third and fourth members of the series, as they undoubtedly are, and are compared with the first, second, third and fourth members of the aliphatic series, allowing for the difference of composition, (CH,),, these discrepancies disappear.The differences between the rotations of these series are then found to be nearly uniform, and amount to about -0.60 in the mono-and di-carboxylic acids, ketones, and mono-chloro-derivatives of hexamethylene. In the ring hydrocarbons, this difference is, however, much larger, amounting to about 0.988. 29 The next point considered was the influence of the double or bridged ring formation, in which the ring formation from the open chain com- pound has taken place twice, and therefore with a loss of four atoms of hydrogen. Camphor is a compound of this class, and it was found in its case that the bridged ring affected the rotation to the extent of -1.290, or a little more than twice that of the single ring.In borneol, an analogous result was obtained, whilst menthol, which con-tains only a single ring, gave an amount analogous to the synthetical ring compounds. Camphene also contains a bridged ring, which is unsaturated, and after allowing for this, it gives a difference of -1.337, which is not very different from that of camphor, The magnetic rotation of pinene, which is isomeric with camphene but differs from it somewhat in the character of the bridged ring, gave results very similar to those of the latter, but which are a little higher. In the case of the limonenes, which also are isomeric with camphene but contain only a single unsaturated ring along with the unsaturated group CH,*C:CH, outside the ring, the rotations are very different, the value of the single ring formation, allowing for unsaturation, being practically the same as in hexamethylene, 0.988.The rotations of chlorine and bromine derivatives of camphor and the relationships of nitro- and pseudonitro-camphor and camphoryl- oxime were considered, as well as the rotation of camphylamine, bornyl chloride or pinene hydrochloride and dipentene dihydrochloride. The refraction values of borneol and camphor and its derivatives were also given. *13. “The transport number of very dilute solutions.” By B. D. Steele, B.Sc.,and R.B. Denison, B.Sc. The object of this research mas to see if it were possible to obtain by the investigation of sufficiently dilute solutions a value for tlie transport number for solutions of salts such as calcium chloride, which would result in a constant specific ionic velocity when calculated from different salts of the same cation, thus bringing these salts into line with others, such as potassium chloride, to the ions of which definite rspecific velocities can be assigned.In order to test this question, it was first necessary to develop a method by means of which the trans- port number could be determined for very dilute solutions. The method employed is a simple modification of that originally used by Rittorf and lately modified by Noyes ;it permits of the electrolysis of a practically unlimited volume of solution being carried out in a vessel of reasonable size. Measurements have been made for calcium chloride, nitrate and 30 sulphate, and for potassium chloride, in concentrations of one gram equivalent in 250 litres ;and, by combination of the transport numbers found with the conductivity at infinite dilution, identical values are obtained for the velocity of the chlorine ion from solutions of the calcium and potassium salts, and for the calcium ion from solutions of the chloride and nitrate.The velocity of the calcium ion calculated from measurements of calcium sulphate solution is, however, about 3.5 per cent. higher. The transport number of potassium chloride agrees with the best determinations made in solutions up to 1/10 normal, and confirms Kohlrausch’s assumption that this remains constant with further dilution. *14. An inveatigation into the composition of brittle platinum.’’ By W.N. Hartley, D.Sc., F.R.S. Having had to report upon the composition of brittle platinum in the form of fragments of pins used for dental purposes, their average weight being under 20 milligrams each, a description was given of the method by which the absence of metallic impurities, and also of silicon, was proved spectrographically. The brittle and crystalline character of the metal was showB to be in all probability caused by minute quantities of phosphorus or carbon, and by remelting in a lime crucible under the oxyhydrogen flame its malleability was greatly improved, thus confirming the accuracy of the conclusion arrived at. The difficulty in deciding beyond question whether there were iron lines in the platinum, or platinum in the iron spectrum, or lines of some impuritycommon to both metals mas pointed out, as showing the importance for practical purposes of determinations of wave-lengths made with the greatest accuracy attainable, particularly in the case of such spectra as these where large numbers of lines are so closely grouped together as to have approximately the same wave-lengths.15. ‘‘Tetrazoline. Part 11.” By S. Ruhemann and H. E. Stapleton. The authors find that the action of methyl iodide on tetrazoline is complicated, and they described two of the substances which are formed. One of them crystallises in dark blue needles having the formula C3HDN413,and is readily decomposed by water with separation of iodine, whilst the other forms colourless, well-developed crystals, and is an iodide of the formula C,H7N41,which may be transformed into the corresponding chloride and into the platinichloride, (C,H7N4),H,PtCle.The authors gave reasons for their view that this iodide (or the chloride) is not the salt of methyl tetrazoline; their work, however, is not yet advanced enough to fix the constitution of those two compounds, or to explain the reaction by which they are formed. 31 16. (( The solubilities of the calcium salts of the acids of the acetic acid series.” By J. S. Lumsden, D.Sc., Ph.D. It is well known that many calcium salts diminish in solubility with increase of temperature, and in order to obtain further information on this subject the solubilities of the salts of the acids of the acetic acid series have been carefully determined. Calcium formate is anhydrous when in contact with its saturated solution and gives a simple ascending curve of solubility.The calcium salts of the other acids of the series contain water of crystallisation and a11 diminish in solubility with rise of temperature until a minimum point is reached, after which the solubility increases. Of the salts of the normal acids only calcium acetate changes from one crystalline state to another between 0’ and looo, whilst both calcium isobutyrate and calcium isovalerate have double curves, With the exception of calcium formate all the salts which have been exam- ined, when in contact with their saturated solutions at looo, consist of crystals which contain 1 molecule of water.The salts of the normal acids increase in soIubility from formate to acetate and propionate, then decrease quickly with the growth in the number of carbon atoms, the salts of the iso-acids being more soluble than those of the corresponding normal acids. 17. “The equilibrium between a solid and its saturated solution at various temperatures.” By J. S. Lumsden, D.Sc., Ph.D. The solubilities of the calcium salts of the acids of the acetic acid series were found to be all represented by curves convex to the temper- ature axis, indicating at first decrease then increase of solubility. A curve of this shape is in no way anomalous, for by considering the action of heat on each of the factors which condition the equilibrium ina saturated solution, it is seen to be typically a normal curve. The factors which produce equilibrium in a saturated solution are : the affinity between solid and solvent, the thermal energy of the solid and the pressure of the dissolved particles.By resolving the solubility curve, which is an exact representation of the resultant of these forces at different temperatures, into component curves representing the forces, the influence of temperature on each can be studied. When each force varies directly as the temperature, the solubility curve is a straight line ;when the rate is different it is a curve convex to the temperature axis. Some experimenters have given curves of solubility concave to the temperature axis, but examination of several curves of that kind has shown that they have been produced by the joining of points on two convex curves, so cutting out the transition point.By estimating the heat of solutiou at two points on a convex curve where the solubility is the same, it was found that the sensible heat was much less at the higher point. It was also found that the heat of solution at any temperature diminishes with the concentration, and that the direction of the solubility curve indicates the heat of solution in a saturated solution only, being positive on a descending and neg-ative on an ascending curve. 18. “On the union of hydrogen and chlorine. Part IV. The Draper effect.” By J.W. Mellor and W. R. Anderson, The momentary expansion which occurs when a mixture of equal volumes of hydrogen and chlorine is exposed to a flash of light is called, after its discoverer, the Draper effect. This phenomenon is only produced when luminous rays impinge upon a mixture of approximately equal volumes of hydrogen and chlorine, but not upon chlorine alone, either under reduced or under ordinary pressures, or at temperatures between 15Oand 100’. It is not pro- duced when chlorine is mixed with steam, air, nitrogen, carbon dioxide, carbon monoxide, or methane. When the effect reaches a certain magnitude the mixture explodes. Although a few sparks bring about’ no measurable combination of the mixed gases, the joint effects of a great number of sparksat intervals of half an hour or of one hour is measurable, thus showing that chemical combination takes place during the Draper effect. The amount of combination depends not only upon the number hut aiso upon the intensity of the sparks, The Draper effect appears to be due to some disturbance in the gas which attends chemical com bination.19. ‘‘Note on the constitution of certain organic nitrates.” By C. R. Marshall and J. H. Wiper. The authors criticise a theory recently advanced by Vignon and Qerin regarding the constitution of mannitol hexanitrate and allied substances. According to the French chemists, these higher nitrates reduce Fehling’s solution strongly, whereas the lower nitrated corn-pounds such as glycerol trinitrate have no reducing action whatever.In order to explain this they state that the terminal -CH,*OH group of the higher polyhydric alcohols is converted, during nitration, into tb hydrated aldehyde group, -CH(OH),, which, under the influence of the nitrous acid formed during the reaction, is further changed to a -0H(0H)ONO group. This, by the action of the alkali of the Fehling’s solution, is converted to an aldehyde group which acts as the reducing agent, Against this view it is urged that the amount of nitrite formed during hydrolysis would vary considerably in the different members of the series, which is shown not to be the case. It is further proved that these compounds possess only a slight reducing action which can be explained on other grounds.The authors see no reason for departing from the view that these substances are nitric acid esters of the various alcohols. 20. ‘‘Resolution of trimethylhydrindonium hydroxide into its opti-cally active components.” By F.S. Kipping. In continuing his work on hydrindamine (I’rans., 1900, “7, 861; 1.901, 79, 3’70, 430, and 442) the author has studied some of the salts of trimethylhydrindonium hydroxide, ~~H~<CH(NM~;OH) inCH,-CH,>, order to compare their behaviour with that of the salts of the parent base. dl-Trimethylhydrindonium iodide (Tram.,1900, 77,469) interacts with silver d-bromocamphorsulphonate,giving dl-trimethyEhydrindonium d-bromocamphorsulonate, which can be separated into different fractions by crystallisation from a mixture of chloroform and ethyl acetate.The most sparingly soluble fractions yield d-trin.lelhyZhydrindoniu~ d-6rornocamp?~orZphonate,C,,H,8NO-S0,*CloHl,Br0 ;it crystallises in slender needles, melts at 199-200°, and in dilute aqueous solution [+= +YO’. d-TrimethyZhycErindonizcm iodide, C,,H,,NI, prepared from the pre- ceding salt, crystallises from water in lustrous needles, decomposes at about 190’ and is very different from the racemic iodide in most respects; its specific rotation in dilute aqueous solution is [aID= +2 1 -9’. These results show that hydrindamine and trimethyl hydrindonium hydroxide behave very differently towards one and the same acid. 21. (‘Resolution of methylbenzylacetic acid into its optical isomerides.” By F.S. Kipping.Methylbenzylacetic acid, C6H,* CH,* CHMe*CO,H (a-methyl-hydrocinnamic acid), contains an asymmetric carbon group, is easily obtained in large quantities and has recently been used for the 34 preparation of methylhydrindone (Pvoc., 1901, 17, 181) ;in order to obtain an optically active acid chloride for various purposes indicated in the following note, the resolution of the acid was attempted. Fractional crystallisation of the quinine salt gave the desired reeult ; the salt of the d-acid is the more sparingly soluble in most solvents, and, after repeated crystallisation from dilute alcohol and ethyl acetate, is obtained apparently free from its isomeride. Quinine dmethylbenzylacetate crystallises in prisms, meltsat 118-1 19' and is very readily soluble in warm alcohol, but only sparingly so in boiling water ;it has a specific rotation [a],,= -113' in ethyl alcoholic, and [aID== -76" in ethyl acetate, solution.d-Methylbenzylacetic acid is an oil at ordinary temperatures ;the highest specific rotation which has been observed with different samples of the acid (without solvent) is [a],= +20*3O. The sodium salt, purified by fractionally precipitating its alcoholic solution with ether, crystallises in colourless plates and has a specific rotation [a]D= + 26' in dilute aqueous solution. The chloride, prepared by treating the d-acid with phosphorus penta- chloride and distilling under reduced pressure, is optically active, but probably contains considerable quantities of the I-isomeride owing to partial racemisation having occurred.22. d-Methylhydrindone. The formation of oximes, hydrazonea, and semicarbazones." By F. S. Kipping. When the optically active methylbenzylacetyl chloride described in the preceding note is treated with aluminium chloride under suitable conditions (Proc., 1901, 17, 181) it yields an optically active methyl- hydrindone, CBH,<~~CHMe ; the specific rotation of the crude product, which is probably a mixture of the d-and I-isomerides, is about [a]D= +25' in methyl alcohol. The optical properties of the ketone seem to undergo no change at the ordinary temperature, so that it consists entirely of the keto-form ; in accordance with this conclusion, it does not give a coloration with ferric chloride.When heated at its boiling point under the ordinary pressure for some time the ketone racemises, doubtless owing to keto-enolic isomeric change. It also racemises when treated with small quantities of sodium methoxide, sodium hydroxide, or sodium carbonate in alcoholic solution, and the gradual change in rotation can be followed with the polarimeter. There can be little doubt but that this racemisation is brought about by a keto-enolic transformation. 35 X X X X 2 >c<ge -+ 2 >Me ++ \C<Me + b<H’ /H / Me -CO *C*OH *GO *GO and these observations afford direct experimental evidence in favour of the accepted views regarding such changes. Methylhydrindone and hydroxylamine do not seem to interact in absence of alkali, but in presence of potassium hydroxide oxime forma- tion occurs rapidly ; the oxime obtained from the d-ketone is optically inactive.The d-ketone interacts with phenplhydrazine in acetic acid solution, giving a hydrazone ;in this reaction also an optically inactive product is obtained. These facts seem to shorn that oxime and hydr- azone formation are preceded by the conversion of the keto-into the enolic form. When the active ketone is treated with semicarbazide hydrochloride and sodium acetate in aqueous alcoholic solution it yields an optically inactive and an active semicarbazone ;the former is probably produced owing to the presence of the I-ketone in the original substance, and the formation of an active product seems to show that in semicarbazone formation there is no previous transformaeion of the keto- into the enolic modification.These and other reactions of ketones are being further investigated. 23. ‘(Optically active methylbenzglacetic acid.” By A. Lapworth and W. H. Lenton. In order to obtain further evidence on the qixestion as to whether a-substitution in acids and ketones is the result oi direct replacement of the hydrogen atom or is preceded by the formation of an ethylenic .. compound with the group *C:C*O*,attempts were made to prepare an optically active acid which would undergo racemisatiou if the latter view were the correct one. For this purpose, methylbenzylacetic acid was thought to be the most convenient substance, as it is easily synthesised and in its usual form is a solid at the ordinary temperature ; the quinine salt of the acid was therefore fractionally crystallised from ethyl acetate until the melting point and specific rotation of the least soluble portions remained constant.Quinine d-mthyZ6enxylacetate crystallised from ethyl acetate in well- formed needles which melted at 117’. d-MethyZbenxyZacetic acid, CH2Ph*CHMe*C0,H, is a colourless oil; its specific rotation in 1 per cent. ethyl acetate solution was [a],= + 14.9’. The ethyl ester, under similar conditions, has [a],= + 13.2’. The active acid does not racemise appreciably at temperatures below 130°, but when its chloride is brominated at 80-90°, the product is optically inactive.As the authors learn from Dr. Kipping that he has been engaged on the study of active derivatives of benzylmethylacetic acid, they propose to leave its further invest'igation in his hands. The following additional Candidates have been proposed for election. A ballot will be held on Wednesday, February, 19, 1902, at 5.30 p.m, Ferrand, Frederick, 13 Torrington St., Hopwood, Heywood. Works Manager, Heymood, Lancashire. For 17 years Assistant Manager of a wholesale Manufacturing Chemist, Manchester. Now Manager of the Tallow, Oil and Soap Works of Messrs. Hartley and Co., Heywood. A Chemical Research Student. Evan Williams. L. G. RadcZife. Jas. Grant. William Bixolz Ernest 8cott. Daniel McLaren. The following Certificate has been authorised by the Council under Bye-law I, (3).Buxy,Tarit Kanti, M.A., Jubbulpur, C. P., India. Professor of Chemistry, Government College, Jubbulpur. Junior Scholar, Entrahce Examination, 1890 (Calcutta University) and First in Behar Circle. Senior Scholar, First Arts Examination, 1892, and Second in the University in order of merit. Honours in Mathematics, Physics, and Chemistry in the B.A. in 1894, and Foundation Scholar, Presidency College, Calcutta. Worked in the Presidency College Laboratory under Professors A. Pedler, F.R.S.,P. C. Ray, D.Sc. (Edin.), and P. Mukherjee, B.Sc., (Lond.), and stood first in the University in M.A. in Chemistry. Alex. Pedler. Chuni La2 Bose. J. Bhaduri. H. E. Stapleton. 37 ADDITIONS TO THE LIBRARY.I. By Donation. Berzelius, J. J. Lehrbuch der Chemie. Aus der schewidischen Handschrift des Verfassers ubersetzt von F. Woehler. Vierte Original-Auflage. 1835. 10 vols. From E. W. Prevost. Church, A. H. Food-grains of India (Supplement). Containing analyses made since the year 1886. Pp. 23. 1901. From the Author. Gowland, William. The early metallurgy of silver and lead. Part I. Lead. Pp. 64. 1901. From the Author. Halliburton, W. D. The Croonian lectures on the chemical side of nervous activity. Pp. 99. London 1901. From the Author. Roscoe, Henry Enfield, and Schorlemmer, C. Ausfuhrliches Lehrbuch der Chemie. 9 vols. Braunschweig 1885-1902, From Sir Henry Roscoe. Jahresbericht uber die Fortschritte der physischen Wissenschaf ten.Von Jacob Berzelius. Aus dem schwedischen ubersetzt von C. Q. Gmelin (later) und F. Wohler. 20 vols. 8vo. Tubingen. 1822-1841. (Continued under the title) : Jahresbericht iiber die Fortschritte der Chemie und Mineralogie. Eingereicht an die schwedische Akademie der Wissenschaf ten. Ton Jacob Berzelius. (From 1849-1851. Edited by L. F. Svanberg.) Aus dem schwedischen ubersetzt von F. Wohler. 10 vols. (xxi-xxx). 8vo. Tubingen 1848-1851. Register, i-xxv. 1847. From Sir Henry Roscoe. Kurzes Lehrbuch der Chemie, nach den neuesten Ansichten der Wissenschaft. Braunschweig 1898. Prom Sir Henry Koscoe. Ostwald’s Klassiker der exakten Wissenchaften. Photochemische Untersuchungen. 1892. From Sir Henry Roscoe. Jahresbericht uber die Fortschritte der chemischen Technologie fur Fabrikanten, Hutten- und Forstleute, Cameralisten, Chemiker und Pharmaceuten.Herausgegeben von Joh. Rud. Wagner. Six vols. 8vo. Leipzig 1855-1 860. (Continued under the title :) (a) Jahresbericht ub er die Forschritte und Leistungen der chemi- schen Technologie und technischen Chemie. Heransgegeben von J.R. Wagner. Nine vols. (vii-xv) 800. Leipzig 1861-1869. (Contir1.ued under the title :) (b) Jahresbericht uber die Foreschritte und Leistungen der chemi- schen Technologie und technischen Chemie (from vol. xviii) mit besonderer Beru kaichtigung der Gewerbsstatistik. Herausgege ben 38 von J. R. Wagner. Neue Folge. Eleven vols. (xvi-xxvi) 8vo. Leipzig 1870-1880.(Continued under the title :) (c) Wagner’s (R. von) Jahresbericht uber die Leistungen der chemi- schen Technologie, mit besonderer Berucksichtigung der Gewerbe-statistik fur das Jahr 1880 (1882). Herausgegeben von F. Fischer. Fourteen vols. (xxvii--XI) 8170. Leipzig 1581 -1 894. 11. By Purchase. Buchka, Karl von. Lehrbuch der Analytischen Chemie. Zweite Auflage. Erster Theil. Leipzig und Wein 1902. 111. Pamphlets. Boehm, Frederick. Olive oil : its sources, production, character and uses. London 1931. From the Author. Thmaite, B. H. The generation and transmission of electric energy at and from coal pit centres. Pp. 74. London 1901. From the Author. Thwaite, B. H. The profitable utilisation of power from blast-furnace gases. Pp. 48. London 1901.From the Author. Roscoe, H. E. Bunsen. A discourse delivered at the Royal Insti- tution, June lst, 1900. From the Author. At the next meeting on Wednesday,February 19th, at 5.30 p.m., there will be a ballot for the election of Fellows, and the following papers will be communicated : “ Enzyme action.” By A. J.Brown. “On the velocity of hydrolysis of starch by diastase, with some remarks on enzyme action.” By H. T. Brown and T. A. Glendinning.‘(Polymerisation products from diazoacetic ester.” By 0.Silberrad. ‘‘ Condensation of phenols with esters of unsaturated acids. Part VII.” By S. Ruhemann and H. E. Stapleton. “The union of hydrogen and oxygen.” By H, B. Baker. RICHARD CLAY AND SONS, LIMITED, N AND BUNGAY

ISSN:0369-8718    

DOI:10.1039/PL9021800025

出版商:RSC    

年代:1902

数据来源: RSC