J 0 U R N A 1,OFTHE CHEMICAL SOCIETY.TRANSACTIONS.E. C. C. BALY.HORACE T. BROWN, LL.D., F.R.S.A. W. CROSSLEY, D.Sc.) Ph.D. , F.R.S.WYNDHAM R. DUNSTAN, M. A., F.R.S.M. 0. FORSTER, D.Sc., I’h.D., F.R.S.J. T. HEWITT, M.A., D.Sc., Ph.D.R. MELDOLA, F.R.S.G. T. MORGAN, D.Sc.SirW. RAMSAY, K.C.B., LL.D., F.R.S.A. SCOTT, M.A., D.Sc., F.R.S.T. E. THORPE, C.B., LL.D., F.R.S.JOHN WADE, D.Sc.@;bitor :J. C. CAIN, D.Sc., Ph.D.%ub-&;bifor :A. J. GREENAWAY.gssistant Sub-&;bitor :C. I€. DESCH, D.Sc., Ph.D.1908. Vol. XCIII.LONDON:GURNEY & JACKSON, 10, PATERNOSTER ROW,1908RICHARD CLAY & SONS, LIMITED,BREAD STREET HILL, E.C., ANDBUNOAY, SUFFOLKJ O U R N A LOFTHE CHEMICAL SOCIETY.TRANSACTIONS.E. C. C. BALY.HORACE T.BROWN, LL.D., F.R.S.A. W. CROSSLEY, D.Sc.) Ph.D., F.R.S.WYNDHAM R. DUNSTAN, M.A.) F.R.S.M. 0. FORSTER, D.Sc., Ph.D., F.R.S.J. T. HEWITT, M.A., D.Sc., P&D.R. MELDOLA, F.R.S.G. T. MORGAN, D.Sc.Sir W. RAMXAY, K. C.B., LLD., F. R.S.A. SCOTT, M.A., D.Sc., F.R.S.T. E. THORPE, C.B., LL.D., F. R.S., JOHN WADE, D.Sc.&Max :J. C. CAIN, D.Sc., Ph.D.%7b-&?Jiiar :A. J. GREENAWAY.aeeietrrtrt Snb-dMfar :C. H. DESCH, D.Sc., Ph.D.1908. Vol. XCIII. Part I.LONDON:GURNEY & JACKSON, 10, PATERNOSTER ROW.1908RICHARD CLAY dt SONS, LIMITED,BREAD STREET HILL, E.C., ANDBUNGAY, SUFFOLKJ O U R N A LOFTHE CHEMICAL SOCIETY,TRANSACTIONS.E. C. C. BALY.HORACE T. BROWN, LL.D., F.R.S.A. W. CROSSLEY, D.Sc., Ph.D., F.R.S.WYNDHAM R.DUNSTAN, M.A., F.R.S.M. 0. FOKSTER, D.Sc., Ph.D., F.R.S.J. T. HEWITT, M.A., D.Sc., Ph.D.R. MELDOLA, F.R.S.G. T. MORGAN, D.Sc.SirW. RAMSAY, K.C. B., LL. D., F.R.S.A. SCOTT, M.A., D.Sc., F.R.S.T. E. THORPE, C. B., LL. D., F.R.S.JOHN WADE, D.Sc.ebitor :J. C. CAIN, D.Sc,, Ph.D.S,ub-&bifar :A. J. GREENAWAY.2JssistatTt Snb-@bitar :C. H. DESOH, D.Sc,, P1i.D.1908. Vol. XCIII. Part 11.LONDON:GURNEY & JACKSON, 10, PATERNOSTER ROW,1908RICHARD CLAY & SONS, LIMITED,BREAD STREET HILL, E.C., ANDBUNOAY, SUFFOLXC O N T E N T S .PAPERS COMMUNICATED TO THE CHEMICAL SOCIETY.PA GEI. -The Relation between Unsaturation and Optical Activity.Part I. The Menthyl and Bornyl Esters of P-Phenyl-propionic, Cinnamic, and Phenylpropiolic Acids.ByTHOMAS PERCY HILDITCH .11.-Note on the Iodates and Periodates of the Alkali Metalsand the Ammonium Radicle. By THOMAS VIPOND BARKER,B.A., B.Sc. (Oxon.) . . .111.-Acylogens and Thiocarbamides.DIXON and JOHN TAYLOR .1V.-Condensation of Ketones containing the Group*CH;CO-CH :with Esters in Presence of Sodium Ethoxide. By REGINALDW. L. CLARKE, ARTHUR LAPWORTH, and ELKAN WECHSLER .V.-The Elect'rometric Determination of the Hydrolysis of Salts.By HENRY GEORGE DENHAM, M.A., M.Sc., 1851 ExhibitionScholar, University of New ZealandBy AUGUSTUS EDWARD.P--N--PP-CWV1.-Attempted Synthesis of I -Dinaphthacridines ; Con-densation of Methylene Dichloride and l-substituted-2-naphthylamines. By ALFRED SENIER and PERCY CORLETTAUSTIN .VI1.-The Direct Interaction of Aryl Halides and Magnesium.By JAMES FREDERICK SPENCER and ELEANOR MARGUERITESTOKES .* . .V1II.-The Triazo-Group. Part I. Triazoacetic Acid andTriazoacetone (Acetonylazoimide). By MARTIN ONSLOWFORSTER and HANS EDUARD FIERZ1X.-The Influence of Acids and Alkalis on the Velocity ofFormation of Acetoxime. By ERNEST BARRETT and ARTHURLAPWORTHX.-A Colorimetric Method for the Determination of SmallPercentages of Iron in Copper Alloys. By ARNOLD WILLIAMGREGORY, B.Sc. (Lond.) .XI-Derivatives of Tetramethyl Glucose. By JAMES.1151830416368728593COLQUHOUN IRVINE, D.Sc., Ph.D., and AGNE~ MARIONMOODIE, M.A., B.Sc. (Carnegie Scholar) . . 9i v CONTENTS.XI1.-Studies of Dynamic Isomerism.Part VI. The Influenceof Impurities on the Mutarotation of Nitrocamphor. ByT. MARTIN LOWRY and EGBERT H. MAGSONXII1.-Studies of Dynamic Isomerism. Part VII. Note onthe Action of Carbonyl Chloride as an Agent for ArrestingIsomeric Change. By T. MARTIN LOWRY and EGBERT H.MAGSON .X1V.-The Effect on Heat on the Alkyl Iodides, By ZELDAKAHAN, B.Sc. .XV.-Derivatives of 8-Phenylphenazothioniurn. Part I. BySAMUEL SMILES and THOMAS PERCY HILDITCHXV1.-The Velocity of Reduction of the Oxides of Lead,Cadium, and Bismuth by Carbon Monoxide, and theExistence of the Suboxides of these Metals. By FRANCISJOSEPH BRISLEE, D.Sc.XVI1.-The Formation and Reactions of Imino-Compounds.Part VI. The Formation of Derivatives of Hydrindenefrom o-Phenylenediacetonitrile.By CHARLES WATSONMOORE and JOCELYN FIELD THORPEXVII1.-The Colonr of Cupric Salts in Aqueous Solution. ByNEVIL VINCENT SIDGWICK and HENRY THOMAS TIZARDX1X.-Organic Derivatives of Silicon. Part IV. The Sul-phonation of Benzylethylpropylsilicyl Oxide and of Benzyl-ethyldipropylsilicane. By HERBERT MARSDEN, B.Sc. (Vict.),and FREDERIC STANLEY KIPPING .XX.-The Esterification Constants of the Normal Fatty Acids.By JOHN JOSEPH SUDBOROUGH and JAMES MYLAM GITTINS .XX1.-Studies in Fermentation. Part 11. The Mechanism ofAlcoholic Fermentation. By ARTHUR SLATOR, Ph.D., D.Sc.XXI1.-Studies i n the Camphane Series. P a r t . XXV. Actionof Diazomethane on the Two Modifications of isoNitroso-camphor. By MARTIN ONSLOW FORSTER and HENRY HOLMESXXII1.-The Constitution of IJmbellulone.Part 111. ByFRANK TIITIN .XX1V.-Valency. By JOHN ALBERT NEWTON FRIEND, Ph.D. .XXV.-The Oxidation of Aromatic Hydrazines by MetallicOxides, Permanganates, and Chromates. By FREDERICKDANIEL CHATTAWAY .XXV1.-The Reaction between Calcium Carbonate and ChlorineWater. By ARTHUR RICHARDSON, Yh.D. .XXVI1.-Contributions to the Chemistry of the Terpenes.Part 111. Some Oxidation Products of Pinene. By GEORGEGERALD HENDERSON and ISIDORE MORRIS HEILBRONXXVII1.-The Effect of Constitution on the Rotatory Powerof Optically Active Ammonium Compounds. Part 11. ByHUMPHREY OWEN JONES and JOHN ROBERTSHAW HILL ....PAGE10711913214515416518719s21021724225226027028028829CONTENTS. VPAGEXX1X.-The Preparation of E-Benzoin.By ALEX. MCKENZIEXXX.-The Bromination of p-Hydroxydiphenylamine. ByXXX1.-The Reducibility of Magnesium Oxide by Carbon. ByROLAND EDGAR SLADE, M.Sc. . . 327XXXI1.-Constitution and Colour of Azo-compounds. Part 11.The Salts of Para-hydroxyazo-compounds with Acids. ByJOHN JACOB Fox and JOHN THEODORE HEWITT . . 333XXXII1.-The Influence of Foreign Substances on TransitionTemperatures and the Determination of Molecular Weights.By HARRY MEDFORTH DAWSON and COLIN GYRTH JACKSON . 344XXX1V.-Malacone, a Silicate of Zirconium. By ALEXANDERCHARLES CUNMING, D.Sc. . . 350XXXV.-The Influence of Solvents on the Rotation of OpticallyActive Compounds. Part XI. Ethyl Tartrate in AliphaticIIalogen Derivatives.By THOMAS STEWART PATTERSON andDAVID THOMSON, M.A., B.Sc. (late Carnegie Researchand HENRY WREN . . 309ALICE EMILY SMITH and KENNEDY JOSEPH PREVITE ORTON . 314Scholar) . . 355XXXV1.-The Refractive Power of Diphenylhexatriene andAllied Hydrocarbons, By IDS SMEDLEY . . 372XXXVI1.-The Temperatures of Spontaneous Cry stallisation ofMixed Solutions and their Determination by Means of theIndex of Refraction. Mixtures of Solutions of SodiumNitrate and Lead Nitrate. By FLORENCE ISAAC, ResearchXXXVII1.-Amphoteric Metallic Hydroxides. Part I. ByJOHN KERFOOT WOOD . 411XXX1X.-Anomalous Behaviour of the Hydrogen-Electrode inSolutions of Lead Salts, and the Existence of UnivalentLead Ions in Aqueous Solutions. By HENRY GEORGEDENHAM, MA., M.Sc., and ARTHUR JOHN ALLMAND, M.Sc.. 424XL.-The Preparation of Conductivity M’ater. By HAROLDHARTLEY, NORMAN PHILLIPS CAMPBELL, and REGINALDHOLLIUAY POOLE . . 428XL1.-The Formation of 4-Pyrone Compounds from AcetylenicAcids. Part I. By SIEGFRIED RuHElfANN . . 431XL1I.-Researches on the Anthraquinones. By WILLIAM HENRYBENTLEY and CHARLES WEIZMANN . . 435XLT1I.-Organic Derivatives of Silicon. Part V. Benzyl-ethylsilicone, Dibenzylsilicon, and other Benzyl and Benzyl-ethyl Derivatives of Silicane. By ROBERT ROBISON, B.Sc.,and FREDERIC STANLEY KIPPING . . 439XL1V.-Organic Derivatives of Silicon. Part VI. The Optic-ally Active Sulphobenzylethylpropylsilicy 1 Oxides. ByFREDERIC STANLEY KIPPING . . 457Fellow of Somerville College .. 38vi CONTENTS.XLV.-The Metallic Picrates. By OSWALD SILBERRAD, Ph.D.,and HENRY ABLETT PHILLIPS .XLV1.-Brazilin and HEmatoxylin. Part VIII. Synthesisof Brazilinic Acid, the Lactones of Dihydrobrazilinic . andDihydrohaematoxylinic Acids, Anhydrobrazilic Acid, &c.The Constitution of Brazilin, Haematoxylin, and theirDerivatives. By WILLIAM HENRY PERKIN, jun., andROBERT ROBINSON .XLV1I.-The Crystal Form of Halogen Derivatives of Open-chain Hydrocarbons with Reference to the Barlow-PopeTheory of Structure, By FRANS MAURITS JAEGER, Ph.D. .XLVII1.-The Residual Affinity of the Coumarins and Thio-coumarins as shown by their Additive Compounds. ByARTHUR CLAYTON, B.Sc. .XL1X.-Colour and Constitution of Azomethine Compounds.Part I.By FRANK GEORGE POPE .L.-Some Physico-Chemical Properties of Mixtures of Pyridineand Water. By HAROLD HARTLEY, NOEL GARROD THOMAS,and MALCOLM PERCIVAL APPLEBEY .L1.-The Viscosity of Aqueous Pyridine Solutions By ALBERTERNEST DUNSTAN and FERDINAND BERNARD THOLE .LI1.-The Action of Thionyl Chloride and of Phosphorus Penta-chloride on the Methylene Ethers of Catechol Derivatives.By GEORGE BARGER .PartXII. Synthesis of Terpins, Terpineols, and Trepenes de-rived from Methylisopropylcyclopentanes, Me*C,H;CHMe,.By WALTER NORMAN HAWORTH and WILLIAM HENRYL1V.-A P-Lactonic Acid from Acetone and Malonic Acid. ByANDREW NORMAN MELDRUM (Carnegie Research Fellow) .LV. -Deri vat ives of para-Diazoiminobenzene. By GILBERT T.MORGAN and FRANCES M.G. MICKLETHWAITLV1.-A Study of the Diazo-reaction in the Diphenyl Series.By GILBERT T. MORGAN and FRANCES M. G. MICKLETHWAITLVI1.-The Action of Mustard Oils on the Ethyl Esters ofMalonic and Cyanoacetic Acids. By SIEGFRIED RUHEMANNLVIIL-Substituted Dihydrobenzenes. Part 11. 1 :I-Di-methyl-A2’4-dihydrobenzene and 1 : 1 Dimeth~l-A~:~-dihydro-benzene. By ARTEIUR WILLIAM CROSSLEY and NORARENOUF, Salters’ Research Fellow .L1X.-The Affinity Constants of Bases as Determined by theAid of Methyl-orange. By VICTOR HERBERT VELEY .LX.-Traces of a New Tin-group Element in Thorianite. ByCLARE DE BRERETON EVANS .L1II.-Experiments on the Synthesis of the Terpenes.PERKIN, jun. . . . ..PAGE47448951752453253856156357359860261462 162965266CONTENTS. viiPAGELXT.-The Triazo-Group.Part 11. Azoimides of PropionicEster and of Methyl Ethyl Ketone. By MARTIN ONSLOWFORSTER and HANS EDUARD FIERZLXI1.-A New Form of Pyknometer. By WILLIAM ROBERTBOUSFIELD, M.A., K.C. .LXIIL-Para- and Meta-nitrosoacetanilide. By JOHN CANNELLCAIN .LX1V.-The Constitution of ‘‘ Thiocyanates ” containing anElectronegative Group. By AUGUSTUS E. DIXON andJOHN TAYLOR .LXV.-The Relation between Unsaturation and Optical Activity.Part TI. Alkaloid Salts of Corresponding Saturated andUnsaturated Acids. By THOMAS PERCY HILDITCH .LXVI .-The Action of Heat on a-Hydroxycarboxylic Acids.Part IV. Racemic aa’-Dihydroxyadipic Acid and meso-aa’-Dihydroxyadipic Acid, By HENRY RONDEL LE SUEUR .LXVI1.-The Wandering of Bromine in the Transformation ofNitroaminobromobenzenes.By KENNEDY JOSEPH PREVIT~~ORTON and CONSTANCE PEARSON .LXVII1.-The Action of Thionyl Chloride on the MethyleneEthers of Catechol Derivatives. Part 11. Piperonyloin,Piperil, and Hydropiperoin. By GEORGE BARGER andARTHUR JAMES EW~NS .LXIX.-The Solubility of Iodine in Water. By HAROLDHARTLEY and NORMAN PHILLIPS CAMPBELL .LXX.-The Sulphination of Phenolic Ethers and the Influenceof Substituents. By SAMUEL SMILES and ROBERT LEROSSIGNOL . * . . ..ANNUAL GENERAL MEETING .PRESIDENTIAL ADDRESS .LXX1.-Orthobromophenols and Some Bromonitrophenols. ByPHILIP WILFRED ROBERTSON .LXXI1.-The Optical Activity of Compounds having SimpleMolecular Structure. By WILLIAM JACKSON POPE andJOHN READ .LXXII1.-The Action of Potassium Sulphide on PotassiumTetrathionate in Aqueous Solution.By ARTHUR COLEFAX,M.A., Barrister-at-Law .LXX1V.-The Displacement of Halogen in 1-Phenylchloroacet’icAcid by Hydroxy- and Methoxy-groups. A Contributionto the Chemistry of the Walden Inversion. By ALEX.MCKENZIE and GEORGE WILLIAM CLOUGH .LXXV.-The Spontaneous Crystallisation of Sodium SulphateSolutions. By HAROLD HARTLEY, BERNARD MOUAT JONES,and GEORGE ADRIAN HUTCHINSON .66967968168470071672573574174576 377478879479881 182viii CONTENTS.LXXV1.-The Existence in Aqueous Solutions of a UnivalentCadmium Ion, a Subvalent Thallium Ion, and a BivalentBismuth Ion. By HENRY GEORGE DENHAM, M.A., M.Sc.,1851 Exhibition Scholar, University of New Zealand .833LXXVI1.-The Condensation of Epichlorohydrin with Phenols.By DAVID RUNCIMAN BOYD and ERNEST ROBERT MARLE . 838LXXVIIL-Constitution OF Hydroxyazo-compounds. Actionof Diazomethane and of Mercuric Acetate. By CLARENCESMITH [and, in part, ALEC DUNCAN MITCHELL] . . 842LXX1X.-The Quantitative Conversion of Aromatic Hydr-azines into Diazonium Salts. By FREDERICK DANIELCHATTAWAY . . 852ByJAMES FREDERICK SPENCER and MARGARET LE PLA . . 858Tsolationof a New Terpene (Origanene). By SAMUEL SHROWDERPICKLES, M.Sc. . . . . S62LXXXI1.-The Molecular Complexity of Amides in VariousSolvents. By ANDREW NORMAN MELDRUM and WILLIAMERNEST STEPHEN TURNER . . 876LXXXII1.-The Constituents of Olive Leaves.By FREDERICKBELDING POWER and FRANK TUTIN . . 891LXXX1V.-The Constituents of Olive Bark. By FREDERICKBELDING POWER and FRANK TUTIN . . 904LXXXV.-The Refraction and Dispersion of Triazo-compounds.By JAMES CHARLES PHILIP . . . . 918LXXXV1.-The Dissociation Constants of Triazoacetic anda-Triazopropionic Acids. By JAMES CHARLES PHILIP . . 925LXXXVI1.-The Spontaneous Crystallisation of Substanceswhich form a Continuous Series of Mixed Crystals. Mix-ture of Naphthalene and P-Naphthol. By HENRY A.MIERS, F.R.S., and FLORENCE ISAAC . . 927LXXXVII1.-The Influence of Solvents on the Rotation ofOptically Active Compounds. Part XII. Ethyl Tartratein Aromatic Halogen Derivatives. By THOMASTEWARTPATTERSON and DAVID PATERSON MCDONALD, M.A., B.Sc.. 936LXXX1X.-Acetylketen : a Polymeride of Keten. By FRANCESCHICK and NORMAN THOMAS MORTIMER WILSMORE . . 946XC.-The Coxidensation of Benzoin with Methyl Alcohol. ByJAMES COLQUEOUN IRVINE, D.Sc., Ph.D., and DAVIDMCNICOLL, M.A., B.Sc. . . 950XC1.-A New General Method of Preparing DiazoniumXC1I.-The Absorption Spectrum of Camphor. By WALTERPAGELXXX.-Quantitative Separation of Thallium from Silver,LXXX1.-The Constituents of Cyprus Organum Oil.Bromides. By FREDERICK DANIEL CHATTAWAY . . 958NOEL HARTLEY, D.Sc., F.R.S. . . 96CONTENTS. 1xPAGEXCII1.-The Chemical Action of Radium Emanation. Part 111.On Water and Certain Gases. By ALEXANDER THOMASCAMERON and SIR WILLIAM RAMSAY, K.C.B. . . 966Part IV.On Water. By ALEXANDER THOXAS CAMERON and SIRWILLIAM RAMSAY, K.C.B.. . 992XCV.-Molecular Volumes of the Nitrites of Silver, Mercury,and the Alkali Metals. By PRAFULLA CHANDRA RAY . 997XCV1.-The Mutual Solubility of 2-Methylpiperidine andXCVI1.-The Viscosity of Solutions. By CHARLES EDWARDFAWSITT . . 1004XCVII1.-A Criticism of Werner's Theory and the Constitutionof Complex Salts. By JOHN ALBERT NEWTON FRIEND, Ph.D. 1006XCIX.-The Reaction of Diazonium Salts with Mono- andDi-hydric Phenols and with Naphthols. By KENNEDYJOSEPH PREVITE ORTON and REGINALD WILLIAM EVERATT . 1010C.-Ethyl 6-Methyl-2-pyrone-3:5-dicarboxylate and its Deriv-C1.-The Melting Points of the Anilides, p-Toluidides, anda-Naphthalides of the Normal Fatty Acids. By PHILIPWILFRED ROBERTSON. .1033OIL-The Volumetric Estimation of Silver. By WILLIAMROBERT LANG and JOHN OBINS WOODHOUSE . . 1037CII1.-The Polarimetric Study of Intramolecular Rearrange-ment in Inactive Substances. By THOMAS STEWARTPATTERSON and ANDREW MCMILLAN, M.A., B.Sc. (CarnegieResearch Fellow) . . 1041Part11. Anilinobenzoxazole and the Supposed Anilodihydro-benzoxazole. By GEORGE YOUNG and ALBERT EDWARDDUNSTAN . . 1052CV.-The Relation between Dielectric Constant and ChemicalConstitution. Part I. Stereoisomeric Compounds. ByALFRED WALTER STEWART (Carnegie Research Fellow)CV1.-An Apparatus for Determining the Specific InductiveCapacity of Organic Liquids. By ALFRED WALTER STEWART(Carnegie Research Fellow) . . 1062CVI1.-Titani-dihydroxymaleic Acid, and the Detection ofTitanium.By HENRY JOHN HORSTMAN FENTON . . 1064CVII1.-The Triazo-group. Part 111. Bistriazo-derivatives ofEthane and of Acetic Ester. By MARTIN ONSLOW FORSTER,HANS EDUARD FIERZ, and WALTER PHILIP JOSHUA . . 1070XC1V.-The Chemical Action of Radium Emanation.Water, By OTTO FLASCHNER and BASIL MACEWEN . . 1000atives. By JOHN LIONEL SIMONSEN . . 1022OW.-Contributions to the Chemistry of the Amidines.. 105X CONTENTS.C1X.-Experiments on the Synthesis of 1-Methylcyclohexyl-idene-4-ace tic Acid, CH1Cle<CH2 CH -CH .CH2>C: CH*CO,H.Part I. By WILLIAM HENRY PERKIN, jun., and WILLIAMJACKSON POPE . . 1075CX.-The Synthesis and Constitution of Certain Pyranol SaltsRelated to Brazilein and Haematein. By WILLIAM HENRYPERKIN, jun., ROBERT ROBINSON, and (in part) MAURICERUSSELL TURNER .. 1085CX1.-Brazilin, Haematoxylin, and their Derivatives. Part IX.On Brazilein, Hzematein, and their Derivatives. By PAULENGELS, WILLIAM HENRY PERKIN, jun., and ROBERTROBINSON . . 1115(3x11.-The Interaction of Copper and Nitric Acid in Presenceof Metallic Nitrates Considered with Reference to theExistence of Hydrates in Solution. By EDWARD HENRYRENNIE, M.A., D.Sc., ALFRED J. HIGGIN, F.I.C., and WILLIAM:TERNENT COOKE, D.Sc. . 1162CXII1.-Condensation Products from AminopinenedicarboxylicAcid. By WILLIAM: GODDEN, B.Sc. . . 1171CX1V.-The Triazo-group. Part IV. Allylazoimide. ByMARTIN ONSLOW FORSTER and HANS EDUARD FIERZ . . 1174CXV.-Aromatic Arsonic and Arsinic Acids. By FRANK LEEPYMAN and WILLIAM COLEBROOK REYNOLDS .. 1180UXV1.-The Electrolytic Oxidation of Some HydroxybenzoicAcids. By ARTHUR GEORGE PERKIN and FREDERICK MOLLWOPEREIN . . 1186CXVI1.-The Thermal Decomposition of Hydrocarbons. Part I.[Methane, Ethane, Ethylene, and Acetylene.] By WILLIAMARTHUR BONE and HUBERT FRANK COWARD. . 1197CXVII1.-The Effect of Constitution on the Optical Activity ofNitrogen Compounds. By REGINALD WILLIAM EVERATT, B.Sc. 1225CX1X.-Acids as Accelerators in the Acetylation of the Amino-groups. By ALICE EMILY SMITH and KENNEDY JOSEPHPREVIT~ ORTON . . 1242CXX.-The Hydrolysis of Amygdalin by Emulsin. Part I. ByS. J. MANSON AULD, Ph.D. . 1251CXX1.-The Hydrolysis of Amygdalin by Emulsin. Part 11. ByS. J. MANSON AULD, Ph.D. . 1276CXXIL-The Formation of 4-Pyrone Compounds from Acetyl-enic Acids.Part 11. By SIEGFRIED RUHEMANN . . 1281CXXIIL---Methylcamphor and Fenchone. By WALTER HAMISGLOVER . . . . 1285CXX1V.-Viscosity Determinations at High Temperatures. ByCHARLES EDWARD FAWSITT . . 1299PAGE2 CONTENTS. xiPAGECXXV.-The Formation of Polyiodides in Nitrobenzene Solu-tion. Part 111. The Chemical Dissociation of the Poly-iodides of the Alkali Metals and Ammonium Radicles. ByHARRY MEDFORTH DAWSON . . . 1308CXXV1.-The Study of the Absorption Spectra of the Hydro-carbons Isolated from the Products of the Action ofAluminium Chloride on Naphthalene. By ANNIE HOMER,Fellow of Newnham College, and JOHN EDWARD PURVIS, M.A. 1319CXXVI1.-Cholestenone. By CHARLES DOREE and JOHNADDYMAN GARDNER .. 1328OXXVII1.-Apparatus for Experiments at High Temperaturesand Pressures, and its Application to the Study of Carbon.By RICHARD THRELFALL, F.R.S. . . 1333CXX1X.-The Rusting of Iron. By WILLIAM AUGUSTUS TILDEN 1356CXXX.-Some Esters of Arsenious Acid. By WILLIAM ROBERTLANG, JOHN FRANCIS MACKEY, and Ross AITKEN GORTNER 1364CXXX1.-Benzeneazo-2-pyridone. By Wr LLIAaf HOBSON MILLSand SIBYL T. WIDDOWS . . 1372CXXXI1.-Aromatic Selenonium Bases. By THOMAS PERCYHILDITCH and SAMUEL SMILES . . 1384CXXXIIL-The Relation between Unsaturation and OpticalActivity. Part 111. Optically Active Salts of Acids Con-taining Adjacent Unsaturated Groups. By THOMAS PERCYHILDIWH . . 1388CXXX1V.-The Preparation of Disulphides.Part 11. TheAction of Alkalis on Sodium Alkyl Thiosulphates. ByTHOMAS SLATER PRICE and DOUGLAS FRANK TWISS . . 1395CXXXV.-The Preparation of Disulphides Part 111. TheNitrobenzyl Disulphides. By THOMAS SLAYER PRICE andDOUGLAS FRANK TWISS . . 1401CXXXV1.-Solubility of Silver Chloride in Mercuric NitrateSolution. By BERTRAM HAWARD BUTTLE and JOHN THEODOREHEWITT . . 1405CXXXVI1.-The cis- and tmm-Modifications of 1-Methylcylo-hexan-2-ol-4-carboxylic Acid and their Conversion into1-Methyl-A1-cycZohexene-4-carboxylic Acid. By ANDREWNORMAN MELDRUM (Carnegie Research Fellow) and WILLIAMHENRY PERKIN, jun. . . 1416Part I.Glucose-anilide, -oxirne, and -hydrazone. By JAMESCOLQUHOUN IRVINE, Ph.D., D.Sc., and ROBERT GILMOURCXXX1X.-The Use of the Micro-balance for the Determina-tions of Electrochemical Equivalents and for the Measure-ment of Densities of Solids.By OTTO BRILL and CLARE DEBRERETOX EVANS. . . 1443CXXXVII1.-The Constitution of Glucose Derivatives.. 142xii CONTENTS.CXL.-The Fluorescence of Platinocyanides. By LEONARDANGELO LEVY . . 1446CXL1.-The Reduction of Aromatic Nitro-compounds to Azoxy-derivatives in Acid Solution. By BERNHARD FLURSCHEIMand THEODOR SIMON . . 1463CXLI1.-The Reduction of Refractory Oxides by Carbon. ByHAROLD CECIL GREENWOOD, M.Sc. . . 1483CXLII1.-The Production of Ferro-alloys. By HAROLD CECILGREENWOOD, MSc. . . 1496CXL1V.-The Proteins of Egg-yolk. By R. H. ADERS PLIMMER,D . Sc. . 1500CXLV.-The Action of Bromine on P-Hydrindone. By NORNANALLEN CREETH and JOCELYN FIELD THORPE .. 1507CXLV1.-The Constituents of Canadian Hemp. Part I.Apocynin. By HORACE FINNEMORE, B.Sc. . . 1513CXLVI1.-A New Synthesis of Apocynin. By HORACEFINNEMORE, B.Sc. . . 1520CXLVIIL-Aromatic a-Disulphones. By THOMAS PERCYHILDITCH . . 1524CXL1X.-On Polymorphism, with Especial Reference to SodiumNitrate and Calcium Carbonate. By WILLIAM BARLOW andWILLIAM JACKSON POPE . . , 1528CL.-The Action of Nitrous Gases on Dicyclopentadiene, ByALEXANDER RULE . . 1560CL1.-The Constitution of Co-ordinated Compounds. By SAMUELHENRY CLIFFORD BRIGGS . 1564CLI1.-The Rapid Electroanalytical Deposition and Separationof Metals. Part 11. Antimony and Tin. The Employmentof a Diaphragm. By HENRY JULIUS SALOMON SAND .. 1572CLII1.-The Electrolytic Chlorination of the Salts of OrganicAcids. By JOHN KENNETH HAROLD INGLIS and FREDWOOTTON . . 1592CL1V.-The Conductivities of the a-Oximino-fatty Acids. ByJOHN KENNETH HAROLD INGLIS and LOTTIE ENILY KNIGHT . 1595CLV.-The Formation of Ethers from Compounds of the BenzoinType. By JAMES COLQUHOUN IRVINE, Ph.D., D.Sc., andDAVID MCNICOLL, M.A., B.Sc. (Carnegie Scholar) . . 1601CLVL-Studies of the Perhalogen Salts. Part 11. By CHARLESKENNETH TINKLER . . 1611CLVI1.-The Relation between Unsaturation and OpticalActivity. Part IV. The Relative Influence of Bi-, Quadri-,and Sexa-valent Sulphur on Rotatory Power. By THOMASPERCY HILDITCH . . 1618CLV1II.-Coprosterol. Part I. By CHARLES DOHJ~E and JOHNADDYMAN GARDNER .. 1625PAG...CONTENTS. X l l lPAGECL1X.-Oxidation of Hydrocarbons of the Benzene Series.Part 11. Substances containing a Negative Radicle. ByHERBERT DRAKE LAW and FREDERICK MOLLWO YERKIN . 1633CLX.-The Measurement of a Homogeneous Chemical Changein a Gas. (The Thermal Decomposition of Ozone.) ByHERBERT EDMUND CLARKE and DAVID LEONARD CHAPMAN . 1638Dithiodiglycollic and Dithiodilactylic Acids. By THOMASSLATER PRICE and DOUGLAS FRANK Twrss . 1645CLXI1.-The Constituents of the Expressed Oil of Nutmeg. ByFREDERICK BELDING POWER and ARTHUR HENRY SALWAY . 1653CLXII1.-Syntheses with Phenol Derivatives containing aMobile Nitro-group. Part I. The Interaction of 2:3:5-Tri-nitro-4-acetylaminophenol and Amines. By RAPHAELMELDOLA, F.R.S., and JAMES GORDON HAY .. 1659CLX1V.-Contributions to the Chemistry of the CholesterolGroup. Part I. The Action of Hydrogen Peroxide and ofFused Potassium Hydroxide on Cholesterol. By ROBERTHOWSON PICKARD and JOSEPH YATES . . 1678CLXV.-Derivatives of S-Phenylphenazothionium. Part 11. BySAMUEL SMILES and THOMAS PERCY HILDITCH . . 1687CLXV1.-A Reaction Distinguishing Phosphoprotein fromNucleoprotein and the Distribution of Phosphoproteins i nTissues. By R. H. ADERS PLIMMER and F. H. SCOTT . . 1699CLXVI1.-The Colouring Matters of the Stilbene Group. Part V.The Action of Caustic Alkalis on Derivatives of para-Nitro-toluene.CLXVIIL-The Trithionates and Tetrathionates of the AlkaliMetals. Part I. By JOHN EDWIN MACKENZIE (ResearchFellow of the University of Edinburgh) and HUGH MARSHALL 1726CLX1X.-The Sporitaneous Crystallisation of Solutions of someCLXX.-The Relation between Absorption Spectra and ChemicalConstitution.Part IX. The Nitroso- and Nitro-groups.By EDWARD CHARLES CYRIL BALY and CECIL HENRY DESCH . 1747CLXX1.-The Synthesis of Complex Acridines. By PERCYCORLETT AUSTIN. . 1760CLXXI1.-The Solubilit’y of Lime in Water. By GERALDTATTERSALL MOODY and LEWIS THOMAS LEYSON. . . 1767CLXXII1.-The Chlorination of para-Nitroaniline. By BERN-HARD FL~~RSCHEIM . . 1772CLXX1V.-The Direct Action of Radium on Copper and Gold. . 1775CLXXV.-Syntheses with the Aid of Monochloromethyl Ether.Part I. The Action of Monochloromethyl Ether on theSodium Derivatives of Ethyl Malonste and Ethyl isoPropy1-CLX1.-The Preparation of Disul phides.Part IV. Esters ofBy ARTHUR GEORGE GREEN and JAMES BADDILEY . 1721Alkali Nitrates. By BERNARD MOUAT JONES . . 1139By EDGAR PHILIP PERMAN .malonate. By JOHN LIONEL SIMONSEN . . 177xiv CONTENTS.CLXXVL-The Effect of Constitution on the Rotatory Power ofOptically Active Nitrogen Compounds. Part 111. ByREGINALD WILLIAM EVERATT and HUMPHREY OWEN JONEEI , 1789CLXXVI1.-Relation between Chemical Constitution and Physio-logical Action in Certain Substituted Aminoalkyl Esters.CLXXVII1.-The Relation between Absorption Spectra andChemical Constitution. Part X. Unsaturated Acids ofthe Benzene Series. By EDWARD CHARLES CYRIL BALY andKONRAD SCHAEFER . . 1808CLXX1X.-The Relation between Viscosity and Chemical Con-stitution.Part 11. The Existence of Racemic Compoundsin the Liquid State. By ALBERT ERNEST DUNSTAN andFERDINAND BERNARD THOLE . . 1815CLXXX.-The Direct Interaction of Magnesium and AlkylHalides. By JAMES FREDERICK SPENCER and MARY S.CREWDSON . . 1821CLXXX1.-The Interaction of Metals of the Aluminium Groupand Organic Halogen Derivatives. By JAMES FREDERICKSPENCER and MARION L. WALLACE . . 1827CLXXXI1.-The Interaction of Hydrogen Dioxide and Sulphides.By MAUD GAZDAR and SAMUEL SMILES . 1833CLXXXII1.-The Influence of Solvents on the Rotation ofOptically Active Compounds. Part XIII. Ethyl Tartratein Aromatic Nitro-derivatives. Influence of Temperature-change on Rotation in Solution. By THOMAS STEWARTPATTERSON. . 1836CLXXX1V.-A New Form of Gas Burette.By ARTHUR EDWINHILL . . 1857CLXXXV.-The Triazo-group. Part V. Resolution of a-l'riazo-propionic Acid. By MARTIN ONSLOW FORSTER a.nd HANSEDUARD FIERZ . . 1859CLXXXV1.-The Triazo-group. Part VI. Triazoethyl Alcoholand Triazoacetaldehyde. By MARTIN ONSLOW FORSTER andHANS EDUARD FIERZ. . 1865CLXXXVI1.-Experiments on the Synthesis of the Terpenes.Part I (continued). Resolution of dl-1-Methyl-Al cyclo-hexene-4-carboxylic Acid and Synthesis of the OpticallyActive Modifications of Terpineol. By KENNETH FISHERand WILLIAM HENRY PERKIN, jun. . . lS71CLXXXVII1.-Experiments on the Synthesis of the Terpenes.Part XIII. Synthesis of isocarvestrene (A6:S(g)-m-Mentha-diene) and its Derivatives. By KENNETH FISHER andWILLIAM HENRY PERKIN, jun.. . 1876CLXXX1X.-Aromatic Arsonic Acids. By MARMADUKE BARROW -CLIFF, FRANK LEE PYMAN, and FREDERIC GEORGE PERCYREMFRY . . 1893PAGEBy FRANK LEE PYMAN . . 179CONTENTS. xvPAGECXC.-The Relation between Absorption Spectra and ChemicalConstitution. Part XI. Some Aromatic Hydrocarbons. ByEDWARD CHARLES CYRIL BALY and WILLIAM BRADSHAW TUCK 1902CXC1.-Colour and Constitution of Azomethine Compounds.Part 11. By FRANK GEO. POPE and ROBERT FLEMING . . 1914CXCI1.-The Relation between Viscosity and Chemical Con-stitution. Part 111. The Enol-ketonic Tautomerism. ByALBERT ERNEST DUNSTAN and JAMES ARTHUR STUBBS . . 1919CXCII1.-Contributions to the Chemistry of the CholesterolGroup. Part 11. Some Oxidation Products of Sitosterol.By ROBERT HOWSON PICKARD and JOSEPH YATES .. . 1928CXC1V.-The Condensation of Salicylaldehyde and Benzamide.By ARTHUR WALSH TITHERLEY and MORRIS EDGAR MARPLES. 1933CXCV.-Experiments on the Synthesis of 1-Methylc?jcZohexyl-iclene-4-acetic Acid. Part 11. By VICTOR JOHN HARDING,WALTER NORMAN HAWORTH, and WILLIAM HENRY PERKIN,Synthesisof Methane. By WILLIAM ARTHUR BONE and HUBERT FRANKCOWARD . . 1975CXCVI1.-The Chlorination of Methyl Derivatives of Pyridine.2-Methylpyridine. Part 11. By WILLIAM JAMES SELL . 1993CXCVII1.-The Chlorine Derivatives of Pyridine. Part IX.Preparation and Orientation of 3:5-Dichloropyridine. ByWILLIAM JAMES SELL . . 1997CXC1X.-The Chlorine Derivatives of Pyridine. Part X.Orientation of 2: 3 :5-Trichloropyridine.By WILLIAM JAMESSELL . . 2001CC.-Organic Derivatives of Silicon. Part VII. The Synthesisof dl-LCjulphobenzylethylisobutylsilicyl Oxide. By BERNARDDUNSTAN W~LKINSON LUFF, A.I.C. (1851 Exhibition Scholar),and FREDERIC STAXLEY KIPPING . . 2004CC1.-The Coumarin Condensation. By ARTHUR CLAYTON . 2016CCI1.-Studies on the Viscosity and Conductivity of SomeAqueous Solutions. Part I. Solutions of Sucrose, Hydro-gen Chloride, and Lithium Chloride. By W. HEBERGREEN, D.Sc. . . 2023CCIT1.-Studies on the Viscosity and Conductivity of SomeAqueous Solutions. Part 11. Mixtures of Solutions ofSucrose and Lithium Chloride. A Contribution towardsthe Elucidation of the Connexion between Ionic Mobility andthe Fluidity of the Solution.CCIV.-The Formation of Polyiodides in Nitrobenzene Solution.Part IV.The Electrolytic Dissociation of the Polyiodidesof the Alkali Metals and Ammonium Radicles. By HARRYMEDFORTH DAWSON and COLIN GYRTH JACKSON . . 2063CCV -Meteloidine : A New Solanaceous Alkaloid. By FRANKLEE PYMAN and WILLIAM COLEBROOK REYNOLDS . . 2077jun. . . 1943CXC V1.-The Direct Union of Carbon and Hydrogen.By W. HEBER GREEN, D.Sc. 204XVi CONTENTS.CCV1.-The Action of Phosphorus Pentachloride on the Methyl-ene Ethers of Catechol Derivatives. Part 111. The CyclicCarbonates of Dichloro-ethyl- and -propyl-catechol. ByGEORGE BARGER . . 2081CCVIL-The Synthesis of Thionaphthen Derivatives fromStyrenes and Thionyl Chloride. By GEORGE BARGER andARTHUR JAMES EWINS . . 2086CCVII1.-Organic Derivatives of Silicon. Part VIII. TheResolution of dl-Sulphobenzylethylisobutylsilicyl Oxide andthe Properties of the Optically Active Acids. By BERNARDDUNSTAN WILKINSON LUFF (1851 Exhibition Scholar) andFREDERIC STANLEY KTPPING . . 2090CCIX. -Some Molecular Compounds of Styphnic and PicricAcids. By CHARLESTANLEY GIBSON . . . 2098CCX.-The Formation of Some Carbides. By JOHN NORMANPRING , . 2101CCX1.-The Relation between Absorption Spectra and ChemicalConstitution. P a r t XII. Some Amino-aldehydes and-ketones of the Aromatic Series. By EDWARD CHARLESCYRIL BALY and EFFIE GWENDOLINE MARSDEN . . 2108CCXI1.-The Affinity of Certain Alkaloids for HydrochloricAcid. By VICTOR HERBERT VELEY . . 2114CCXII1.-The Affinity Constants of Bases as Determined bythe Aid of Methyl-Orange. By VICTOR HERBERT VELEY . 2122CCX1V.-Organic Derivatives of Arsenic. Part I. Dicam-phorylarsinic Acid. By GILBERT T. MORGAN and FRAKCESM. G. MICKLETHWAIT .CCXV.-Study of the Constitution and Properties of theRhodsnides of Inorganic Radicles. Part I. By AUGUSTUSEDWARD DIXON and JOHN TAYLOR . * 2148CCXV1.-Ester Catalysis and a Modification of the Theory ofAcids. By EDWARD F~TZGERALU and ARTHUR LAPWORTH . 2163CCXVI1.-Tellurium Dicyanide. By HERBERT EDWINCOCKSEDGE. . 2175CCXVII1.-Boron Thiocyanate. By HERBERT EDWINCOCKSEDGE. . 2177CCX1X.-The Viscosity of Fuming Sulphuric Acid.ALBERT ERNEST DUNSTAN and ROBERT WILLIAM WILSON ”? 21 79CCXX.-The Densities of Krypton and Xenon. By RICHARDB. MOORE, B.Sc. . 2181CCXX1.-An Examination of the Conception of Hydrogen Ionsin Catalysis, Salt Formation, and Electrolytic Conduction.By ARTHUR LAPWORTH . . 2187CCXXI1.-The Oxidation of Phosphorous Acid by Iodine. ByBERTRAM DILLON STEELE . . 2203OBITUARY . 2214PAGE. 214