THE JOURNAL OF THE CHEMICAL SOCIETY LONDON WARREN DE LA RUE P€€.D. W. ODLING M.R. F.R.S. F.R.S. J. STENHOUSE LL.D. F.R.S. THOMAS GRAHAM F.R.S. .Yc-".A -.-b ""-% L y1 "\ NEW SERIES VOL. 111. (Entire Series Vol. XVIII.) . --~ ~~ ~ ?_?. LONDON HI:PPOLYTE BAILLT$JRE 219 REGENT STREET. lStl5. LONDON PRINTED BY HARRISON AND SONS aT. MARTIN'S LANE. CONTENTS OF THE EIGHTEENTH VOLUME. PAOB The Action of Ammonia on SulphochIoride of Phosphorus. By J. H. Glad-stone. Ph.D. F.R.S. and J. D. Holmes Esq. .. . . . . ............ ... . 1 Note on the Artificid Formation of Pyridine from Naphthalene. By W. H. Perkin.. ............ .. .. ,. ,...,.,... ....... .. .. ....... . ...... 9 Researches on the T‘acuum. By Hermann Sprcngcl P1i.D..... . ....... 9 On a New React.ion for the Production of Anhydrides and Eihera. By John Broughton B. Sc. Chemical Assistant Royal Institution .... ..,..... 21 Laboratory Memoranda. By Robert Warington Junr. Assistant to Pro- fessor of Chemistry R. A. ColleAe Cirencester .. ... . . ........... .... 27 Note on the Boiling Points of Isomeric Ethers of thc Formula C’rrHSl102.ByJ. Alfred Wanklyn.. ...... -.. ,...........................,... 30 Note on the Action of Chloropicriu and Chloroform on Acetate of Potash. ByHenry Rassett ... . . ...... . . .............. .. .. ,...,. ,......... 31 On Microscopical Researches in Relation to Pharmacy. By Henry Deane F.L.S and Henry B. Rrady F.L.S................... .. ......,. .. 34 On the Oxidation of India liubber.By John Spiller F.C S. . . .,. .. ,. 44 On a Dense Brine from Saltsprings Nova Scotia. By Prof. Horn D.C.L. University of King’s Collego Windsor N.S. ,..... . . ,... . . . . . . . . ..,. 46 On t!ie most Volatile Constituent,s of American Petroleum. By Edmund Ronalds Ph.D. .. . .... ,. ...... . ,...... ........... ...... .. .... 54 On the Action of Chlorine upon drseuious Acid. By Charles L. Bloxam. 62 On a Crystallised Hydrate of Phenylic Alcohol. By F. Crace Calvert F.K.H. F.CS. .....,.... . ....................,. ,..... .. .... .. .. 66 On the Action of Silicate and Carbonate of Soda an Cotton Fibre. ByF. Crace Calvert F.R.S. P.C.S. .. .... .. .. .. .... .. .. .. ..,....... 70 On Borne Hydrated Cupric Oxychlorides from Cornwali. By -4. H.Church M.A. Professor of Chemistry R. A. College Cirencester . . ..... . .. . .. . 77 On some Hydrated Cupric Oxgsulphates from Cornwali. By A. H. Church 83 On Vapour-Densities. 13y J. Alfred Wanklyn .. .... . ... .. ... . ,.,.,.. 89 Note on a New Brornine-Dcrivative of Camphor. By W. H. Perkin .,..... 92 On the Action of Hydrosulphate of iiminouia upon freshly precipitsted Sul- phide of Copper. By Charles L. Bloxam . ... . . . .. ............ .. 94 Notes upon the General Routine of Qualitative Analysis for Metals. ByCiftrlcs 1,. Bloxam.. .. .. .,.. .. ... ........ .. ............ ..... 97 en the Periodides of some of the Organic Bases. By William A. Tilden Demonstrator of Chemistry in the Laboratory of the Pharmaceutical Society 99 On Phosphitle of 3Iagnesium.By Thomas P. Blunt . .... . . .... ,.... . 106 On the Specific Refractive Energy of E,J. 11 Crla.c\stone 1’h.q. P.1 s. . . iernents and their Compounds. .... . . .... .. .. . . ,. .. .. .... ,. . .? 108 1v CONTENTS. PSGB Observations on some Points in the Analysis of Potable Raters. By Professor W. A. Xiller M.D. LL.D. Pres. Chem. Soc.; Trcau. and V.P.R S.. .. . 117 Researches on Acids of the Acrylic Ser.!es.-No. 1. Transformation of the Lactic into the Acrylic Series of Acids. By E. Frankland P.R.S. and B. F. Duppa Esq. ...... . . ..... . ........ . . .. ...... . . .. . . ........ 133 On Lecture Illustrations. Uyv A. W.Hofmann.. .... . . . . . . . ....... . .... 166 On the Action of Nascent Hydrogen on Azodinaphthyldiamine. By W.H.Perkin.. ..... . ,..... . . ..,..... ... .. .. . ......... . .. ,...,..... 173 On a Mode of Measuring the Relative Sensitiveness of Phcttographic Papers. By Arthur M'Dougall BSc.. ... . ..... ...,.... . . ........ ..... . . . 183 On some Compounds and Derivatives of Gtlyoxylic Acid. By Henry Debus Ph.D. F.R.S. .. .................. ...... .. .. .................... 193 On the presence of Mangmese in Oolite and Lias. By Robert Warington Junr. Assistaut to Professor of Chemistry Royal Agricutural College Cirencester . ... . . . . . .. .. . ,. . . . . . ...,..,.. . . .... . .. .,. .. 206 Table for the Calculation of direct Nitrogen Determinations. By Jas. T. Brown .............. .. ........ ..,... .. ........ ........ ....,. .. 210 Notes on a Cornish Mineral of the dtacamite Group.By A. H. Church.. . . 212 Notes on a Ferric Hydrate from Cornwall. By A. I€. Church .... . .. . .,,. 214 Analyses of some Bronzes found in Great Britain. By A. H. Church .. .. 215 The Estimation of Indigotin or the Blue Colouring Matter of Indigo. ByClemens Ullgren . . ,...,....* .,.. . ..... . .. . ,...... . .. . . . .... 217 On the Qualitative Analysis of Substances Insoluble in Water and Acids. ByCharles L. Bloxam.. ,.......,,..... .... .. .. .................. 226 On the Theory of Isomeric Compounds. By Dr A. Crum Brown ,.. . . .. 230 On the Action of Light upon Sulphide of Lead and its bearing upon the Pre-servation of Paintings in Pictiire Galleries. By Dr. David S. Price F.C.S.. ... . . .. ,.,.. . . ...,. .. ,.. . ..... . . ...,...... . ..,....... 245 Notes on the Compounds of Copper and Phosphorus. By F. A. Abel F.R.S.. 249 cester. ,... ... . , ,.. . ...... . ...... ... . ... . ..... . ...... . ...... 259 On a new Series of Bodies in which Kitrogcn is substituted for Hydrogen. Peter Griesa .... .... ...... . .... . . ... . . . . ..... . .,....... . ,.By Chemical Researches on some new and rare Cornish Minerals. By A. €1. Church M,A, Professor of Chemistry Royal Agricultural College Ciren- .. 268 On the Decay of Gutta-percha and Caoutchouc. By Professor William Allen Killer F.R.S. .. . . . . ,.............. ... . ....... . ,., .. 2'13 On the Absorption of Vapours by Charcoal. By J oh n Hunter M.A. ..,. 285 On Caprylic and CEnanthylic Alcohols. By Ernest T. Chapman ....... 290 On a New C!ass of Organic Compounds in which Hydrogen is replaced by Nitrogen. By Peter Qriess .. ..,.,.. . ............ .. .. .. . . ...... 298 Qn Nitro-compounds (Part 11). ?Vith Remarks on Isomerism. By Edmund J. Mills I).Sc. F.C.S. ..,... .. ................ ....... .. .. ...... 319 On the Synthesis of Tribasic Acids. By Maxwell Simpson M.D. F.R.S . 331 On an Bmmoniacal Deposit formed in the process of Drying Blood By John A. H Newlands F.C.S. .... ........................ ..,. ........ 340