JOURNAL OF THE CHEMICAL SOCIETY. CONTAINING THE PAPERS READ BEFORE THE SOCIETY AND ABSTRACTS OF CHEMICAL PAPERS PUBLISHED IN OTHER JOURNALS. F. A. ABEL,F.R.S. W. MARCET,M.D. F.R.S. Ph.D. F.R.S. N. STORY-MASKELYNE, H. E. ARMSTRONG F.R.S. Ph.D. E. J. MILLS,D.Sc. F.R.S. E. ATKINSON F.C.S. HUGO M~LLER C. L. BLOXAN Ph.D. F.R.B. H. DEBUS,Ph.D. F.R.S. H. M. NOAD Ph.D. F.R.S. B.A. F.R.S. W. ODLING M.B. F.R.S. G. C. FOSTER MI~HAEL M.D. F.R.S. W. H. PERKIN, FOSTER F.R.S. E. FRANKLAND Ph.D. F.R.S. D.C.L. F.R.S. H. E. ROSCOE Ph.D. F.R.S. J. H. GILBERT,Ph.D. F.R.S. W. J. RUSSELL Ph.D. F.R.S. A. VOELCKER, J. H. GLADSTONE Ph.D. F.X.S. HARCOURT Ph.D. F.R.S. A. VERNON M.A . F.R.S. A. W. WILLTANSON @;bitar HENRYWATTS,B.A. F.R.S.2JbsfrLIctars G. T. ATKINSOS. E. W. PRh'OST Ph.D. Ph.D. E. C. BABER. W. RAMSAY ROBINSON. D. BENDIX. JOHN D.Sc. R. ROUTLEDGE F. D. BROWN B.Sc. D,Sc. c. SCHORLEMMER F.R.8. C.A. BURGHARDT FRANK D.Sc. H. H. B. SHEPHERD. CLOWES c. L. FIELD. WATSON SMITH. THOMSON. C. E. GROVES. J. MILLAR F. J. LLOYD. WILLIAMVALENTIN. lif. kf.PATTISOX 31UIR. ROBERTWARINGTON. E. NEISON. c. w. WATTS. WATTS D.SC. C. €1. PIESSE. JOHN W. 1%.PIKE,Ph.D. c. R. A. \\71tIGHT n.8~. LONDOX J. VAN VOORST 1 PATERNOSTER ROW. 1877. LONDON JIARRISON AND SCNS PRINTERS IX OllDXMANT TO HEB MAJESTY 8T. NARTIX’S LANE. CONTENTS. PAPERS READ BEFORE THE CHEMICAL SOCIETY :-PAGZ I.-Study of Hydrogen Dioxide and certain Peroxides including Experiments to Determine the Heat of Formation of the Oxygen-molecule.By T. Fairley F.R.S.E. . .I 11.-On certain Bismuth Compounds. By M. M. Pattison Bl'uir F.R.S.E. . 24 ABSTRACTS OF PAPERS PUBLISHED IN OTHER JOURNALS :-General and Physical Chemistry. Annaheim (J.). The Absolute Weight of Atonis. . . . . . Marignac (C.). Specific €hat of Saline Solutions ..... Mendele,jeff (R.) and N. Kajnncler. Coeflicieiit of Expansion of Gases . IIemili~21i Mendele j eff and Bogusky. Coinprcssion of Gases by Low Prcssiires . . . . . . . . . . . . . Troost (L.) and F. Hautcfcuille. The Laws of Coiiipressibility and the CoeEcirnt of Dilatation of ccrtaiii Vapours ...... Bellemy (F.). The Migration of Gases ....... Troost (L.) and P. Haut ef cuille.Determination of Vapour-densities . Hof man n (A. W.). Determination of Vapour-densities in the Torricellian Vacnu1ll . . . . . . . . . . . . . 31 e y e r. (,V.).A Method of Determining the Vapour-clensitics of Substances Roiling at lIigli Teniperatui*es ......... Ducleus (33.). The Separation of Mixed Liquids. . . . . . Guthrie (F.). Salt-solutions and Attached Water. ..... P isati (G.). Elasticity of illetals at various Temperatu~es . . . . Pi sat i (G.). Elasticity of Torsion . . . . . . . . . 1; un g e (G.). Rctnrclation of Chemical Reactions by Indifferent Substances Mitscherlich (A). The Point of Combustion . . . . . . Heumann (Karl). Contributions to the Theory of Luminous Flames. Part 11. ............. Inorganic Chemistry.Bellacci {G.) Production of Ozone by the Pulrerisation of Water .. Geriiez (D.). Prismatic and Octoheclml Sulphur . . . . . . Petterssoiz (0.). The Atomic Weight of Seleiiiuni ..... D i tt e (A). Action of Halogen-acids on Selenions Oxide .... Dittc (-4.).Action of Halo*cn-acids on Telliirous Oxide . . . . Bert helot (M.). Tlicriilic %ormation of IIydrosylaiiiine or Oxyanimonis . T h or p e (T. E.).Phosphorus Pentafluoride . . . . . . . Lissenko (K.). Formation of Phosphonium Iodide ..... 11 CONTENTS. PA GB Rchacherl (G.). Action of Hydrochloric Acid on Potassium Chloirtte . . 47 Debray (H.) The Dissociation of Calomel-vapoui-. . . . . 47 Lecoq cle Eoisbaudran. New Process for the Extraction of Galliuiii. . 48 Lecoq dc Boisbaudran.On the Physical Properties of Gnllium . . 4.8 Nilson (L. F.). The Quantivalence of the Rare Earth-metals . . . 40 Hillebrand (W. P.). T'he Specific IIeats and Atoniic Weights of Cerium Lanthanum and Didyniium . . . . . ... 50 Carnot (A). New Salts of Bismuth and their Use in tile Detection of Potash . . . . . . . . . . . . . 50 Troost (L.) and P. Hantefeuille. Researelies on tde Solution of Gascs in Iron Steel and Manganese . . . . . . . . . 51 Fremy (E.). Salts of Maiiganese Dioxide . . . . . . . 53 lllinera1ogical Chemistry. v. Las aul x (A). Mineralogical and Crptallographical Contributions (con- tinuation). . . . . . . . . . . . . 53 Hatchings. Analrsis of Clirpsocolla and Copper Pitchblende . . . 55 €€awes (G. 17.). 9 Lithia-bearing Variety of Biotite .. . . . 56 Field (F.). Kote on a Kew Cornish Mineral. . . . . . . 56 Yi sa n i (F.). A S~ilpliantimonideof Lead found at Amsberg Westphalia . 56 Levy (A. M.). Origin of Crystalline Rocks . . . . . . . 57 Meunier (Stanislas). Experiments and Observations on Vitreous Rocks . 57 Organic Chemistry. Pnn lorn (D.). Formation of Tertiary Alcohols . . . . . . 5'7 DjaBonow (D.). Conversion of Acid Chlorides into Alcohols . . . 55 Walitzhg (TV. E.,). Cholcsterin . . . . . . . . . 58 ~ Nevolb (11.). Actioii of Water in Gljcdu . . -.. . 55 Lrrnient of€ (J.). Preparation of 'I'riinetli~lcne Bromide . . . . 59 lt'ailach (0.). Preparation of Diclilorarctic il<.itl . . . . . . 59 C;~rj!arolli-'lliuriilali(I<.). Action of 1'ot:isli on Triclilorobutyric Acid .59 Pittig (It.). Siiiiple BLetlioil of Prepariiig GlJmllic Acicl . . . . 59 Wallacli (0.). Action of Chloral and B~oninlon Osjacicls . . . . 59 Prscliibitesk (S,). Synthesis of a-Oxybut>ricAcid . . . . . 60 Patcynb (E.) mid P. Spica. Action of Alljl Iodide and Zinc on Ethyl Ornlatc . . . . . . . -. . . . . . G c) li'ittig (K,.).. On so-called Non-satnmtcd Coinpoimds . . . . . 61 Mnr1,o~nihoff (JV.). On the Isomeric P~rotar'nriciicitls. . . . 61 31arLon.nihoff (W.). Norinal OsyPyrota'tai.ic,Icicl (Glutanic Acid) and its AJ:ILI tliiclcs ........... 6.3 I3i t t iq (12.). Conrcrsioti of Citraconic Aiili-ydride into Sci*onic Aii1i~dricle . 64 Chit t en tlcn (R. 11.). Product of the Oaiclation of Gljcogaii \\it11 Uroimiie Silver Oxide and Water .. . . . . . . . . t14 Leclderhose (G.). Glj cosaminc Hydrochloride . . . . . . cid Fittig (R.). Sew Deriratives of Xucic Acitl . . . . . . 63 Bentc (I?.). On the Pml)ariitioli of Lcvuliiiic~ Acitl and on Camglieen-sugar 63 de Girard (.T ). Spontaneous L4~tu~ntlon of II~tlrocyanic Acid and a Sew C' ~ceof the Coiiil)lcte Transforination of that LcBitl . . . . . 65 Nand1 11 (I,) a?id F. cle 3lontholon. J~~coiirpo~ition of Pota-sium CSanide Ziitc CTnnidc and I'otassiuin Fornliltc in Carboiiic Acid Air and Pure IIyflrogcii. . . . . . . . . . . . . 6G Clnrts ( I). ~tructnreof Cymic and Cpniii-ir -hi& . . . . . 67 C(.cIi (C1. 0.). Clilornl Cr:tnido-cj;~iiate i111ct itu Ikrimtires . . . . 67 l'roolrauer (B.) niicl E. Sell. Action of Biwniinc on Yhcnyl Sulphoc?aiinte 67 S c 11iff (EL.).Action of Alcoholic Potash on the Xustarcl-oils (Thiocarbi- iiclei) . . . . . . . . . . . . . 65 Wnllach (0.). Action of PhosDhorus Peiitabromide on Amicles . . . 68 ... CONTENTS. 111 PAQ 5 Hodges (N. D. C.). On Salts of Hydroxyl-urea and Double Salts of other I€yclroxamates . . . . . . . . . . . 69 Medicus (L.). Decomposition of Uroxanic Acid . . . . . . 69 De Clermont (P.) and E. Wehrlin. Two Sew Thiocarbamides (sulphurens) 70 Barbicr (Pli.). Fluorene and Pjmgenic 1J)drocnrbons . . . . 70 Pat ern0 (E.) and I’. Spicn. Synthesis of PropSlisoprop~l-benzeiie . 77 Reimer (K.). Action of Carbon Tetrachloride on Phenol iii Alkaline Solu- tion . . ..... ..... 77 Baeyer (A).The Cornpoimds of Plitlinlic Acid with the Plie~iols. Part I . 78 TT-eselski (P.)and J. Schuler. Preparation of Hydrocluinonc . . . 78 de 3f ontgolfirr (J.). Isonieyism of the Rotntoyy l’oncr in tlie Cnnipliols . 78 Annalieim (?J.). Crptnlline Foi-n~,Specific Gravity aid .Moleculnr Volume of O\.i~ri1l’TiOhen7ic7o . . . . . . . . . . 79 Xoeriier (W.) and G. 3ionselisc. Two ~ccnze~~c(lisulp~ionic Acids aiici their Re1:itions . . . . . . . . . . . . so Ciillen (Tli.) :ind C. Riittingcr. S~~lpliop~~~clilorobenzoic Beid . . . 82 Acid . I?irttinger ((3.). Si11~~lio~~art~broinnbcii~oie . . . . . 52 Reinlei-(I<.) aiid I?. Ticmann. Actioii of Clilorof‘orm 011 iSromatic Cyanides in Alkaline Solution . . . . . . . . . . 83 Klobnkomski (W.).Rufig:illir Acid . . . . . . . . 54 At terberg (A.). Action of PhoFphorus Pentacliloride on Nitronaphtha-Ieiies . . . . . . . . . . . . . 83 Mullcr (0sw;zlcl.). An Isoniericle of Pibromantliracenc . . . . 86 Liebcrmaiiii(C.)iiiidTopf. Antlii*anol . . . . . . 86 Plath (If ). X:intlioplivl~iiriii . . . . . . . . . 87 TiCIYIi7?ilJ (F.) and 3.M e~i(1clsohn. Constitution of Compounds of the Con11eql aild Va12i11in S cries . . . . . . . . . 87 Xoeriier (G.). Constitiition of Veratric Acid nndVeratro1 . . . . 88 Pntcrnb (E.). Vsnic Arid . . . . . . . . . b9 Sestiiii (F.).Ethyl Snntunatc . . . . . . . . . 90 €I ofin :I 11n (AZ.W.). Oxidation of ilrolnatic Arctarnines by Potassinm Per-111:I 11I$ii11 :it e . . . . . . . . . . . . 90 TTiIlp ero tl t.Bction of ct-ninitvoclilorohc~~~er~e on Arnido-compounds . !)O Nietzhi (R,). Anilinc-black . . . . . . . . . 91 Wallach (0.). Action of PltoyAiorus Pcntnch1or;de on Acetotoluiclide. . 91 l’fofiiiann (A. W.). Xylidincs . . . . . . . . . 92 Scliner (E.).Fliiui.escci,ce of Quiiiirlirie Sulphte . . . . 93 Pliilips (L.). A Hornologue of Caffeine . . . . . . . 93 Felini (F.). Atro1)ine . . . . . . . . . . . 03 11x 11 S nl n 71 11 (U.). Bctulin . . . . . . . . . . 04 Weselsky (P ). GlJcyrretin . . . . . . . . . 96 B nrg (0.). Lignite Tar . . . . . . . . . . $16 Linderos (F.). Sonic Constituents of Adonis vernalis . . . . . 9(3 Fittig (R.). The Acids in Romaii Clinmoinilc Oil . . . . . 57 Soniienschein (’. L.). Some Constituents of Grelsemiunt sentpei*z~i~em .97 Physiological Chemistty . Chnmpio’n (C.) and H. Pellet. EqnivnlPllt Subsfitution of Bfineid Sub-staiiwb in Aiiininls nnd Phiits . . . . . . . . . 95 Wolf f Fitlike! and Ditt iiiann. Assimilation of different Sorts and 31iatiires of Food by Pigs . . . . . . . . . . . 95 v. Swiccic*hi*(IT.).Fo~inntionof I’epsin by Bstraehinns . . . . 100 M~~Iio~inil\off (117.). AcctoiiciuUI.ine . . . . . . . 101 Lorhiqcli (IT.F.}. Cl\eii,icnl Tnrcstjgntion of a Caw of Cjsttiniwin . . 101 Sch inic! t (-il). Relation uf Sodiunl Cliloricle to certain Aninxd Fei-mentn-t1on Proc.essrs . . . . . . . . . . . . 101 Podolinski H.).The Albuminous Ferment of the Pancreas . . . 103 iv CONTENTS. Chemistry of Vegefable Physiology and Agriculture.PbG4 hlercadante (M.). ModiGcation of Starch in Vegetables . . . . 104 Sch ul z e (E.). Formation of Sulphuric Acid in Seedlings . . . . 104 Schulze (E.). IT. Umlauf and A. Urich. The Gerniiration of Lupine Seeds . . . . . . . . . . . . . 104 Mercaclan te (&I.). Absence of Leucin in the Products of Gerinination of the IGraininaceae . . . . . . . . . . . 105 Saintpierre (C.) and L. Magnien. Gascs in the Fruit of the Bladder Senna . . . . . . . . . . . . 105 Rein d e Y s (G.) . Composition and Nutritive and Manurial Value of Kapok Cake . . . . . . . . . . . . . 105 Reinders (G.). Action of Ses-water upon Land . . . . . . 106 Joubert (J.)and C. Chamberland. Kotes on the Permenfation of Fruits plunged into Carbonic dnliydricle .. . . . . . 106 D uria (E.). Cellulose Fernlentation produced by Vegetable Organs and pro- babie Utilisation of Sugar for the Production of Cellulose in Vegetation . 106 BBchamp (A). The Microzynies of Germinated Barley and of Sweet Almonds asproducers of Diastase and Synaptase . . . . . 106 Traube (Moritz.). Pure Yeast . . . . . . . . . 107 Amalytical Chemistry. Puchot (E.) The Iodine and Stai-ch Reaction . . . . . . 107 Selini (F.). Detection of Traces of Phosphoric Acid in Toxicological Researelics ........... 108 D it t mar’s Method of Determining the Amount of Chromium in Chroine Ores . . . . . . . . . . . . 108 Davp (E. W.). A New Chemical Test for Alcohol . . . . . 108 Jacqnemin (E.). Rhodeinr a New Test for Aniline . . . . .109 Pellagri (G.). Phjllocy~~i;~ias a Reagent . . . . . . . 109 31ark 3 TV 11 i k o ff (W.). Determination of Theine in Tea . . . . 110 Selnii (I?.). Modification of the Process for Extracting the Poisonous Alka- loYds from the Viscera . . . . . . . . . . 110 Technical Cliemistry. Pnlineri (P.). Chemical Exaniiiiation of twelve Colours found at Poinpeii . 111 Piscli er (F.). Temperature and Coinposition of the Gases evolve3 fi.oin Ult Famarine Fnmaces . . . . . . . . . . 111 Jarolimek (A). Hardening of Steel . . . . . . . . 113 He s Y (P.). Eui-nishing of Iron . . . . . . . . . 114 Glanzmsnn (R.). The Uses of Patent Coloiirs . . . . . . 115 Lam-(A). The Present State of the Sugar Industi-y in France and a few Experiments on the Use of Lime in the Clnrifjing Process .. . 116 Use of Hydrochloric Acid in the Diffusion Process . . . . . 118 Xoeller (J.). Myall Wood . . . . . . . . . 119 Carbazotin. A New Explosive Substance . . . . . . . 119 von Henmen (F.)nntl IT.ran Hasselt. Manufacture of Yeast. . . 119 Terne (B.). The Maiiufitcture of Glue . . . . . . . 122 Vicdt (E.W.). Logwood Inks . . . . . . . . 123 Schiff (H.). Carbon Disulphide as an Antiseptic. . . . . 12.4 'IJI.-Study of Hydrogen Dioxide and of certain Peroxides in- cluding Experiments to determine the Heat of Formation of the Oxygen-molecule by T Fairley F.R.S.E. (COW tl'nuetl). . 125 1V.-The Alkalo'ids of the Aconites Part I. On the Crystal- lisable Alkalo'ids contained in Acoiaitzm Xapellu s by C. R.A.Wright D.Sc. . . 143 V.-Notes on some Experiments made with a view to nscertsin-ing the Practical Value of a Proposed Nethod of determin-ing the 3fineral Strength of Soils by means of Water Culture. By G. A. Hight . . 156 Colley (R.). On a case of Work produced by the Electric Current -. 160 13 er trand (A.). Electro-deposition of Aluminium Magnesium Cadmium Bismuth Antimony and Palladium . . . . . . . 161 Simon (E.). Ratio of the two SpecificHeats of a Gas . . . . 162 Atomic Weights and Tensims of Vaponrs . . . . 162 Tliomsen (J.). A pretended relation between the Mechanical Equivalent of Heat and the Molecular Weights . . . . . . . . 164 Mendelejeff (D.) and V. Hemilian. Compressibility of Gases at Pres- sures less than One Atmosphere .. . . . . . 164 Bruhl (J.W.). Determination of Vapour-densities . . . . . 165 Kommrath (H.). Chemical Affinity . . . . . . . . 165 Chevreul (E.). Capillary Affinity . . . . . . . . 166 Coquillon (J.J.). The Limits between whiclt Fire-damp can Explode ; and some New Properties of Palladium . . . . . . . 166 Inoygarzic Chemistry. Lelimann (A.). Note on Ultramarine . . . . . . . . 16'7 Passbender (R.). Some Double Salts of Calcium Sulphate . . . 167 Lecoq deBoisbaudran. Reactionsof Gallium . . . . . 167 Friedel (C.) and J. GuBrin. Titanium Compounds . . . . . 168 S key (W.). Evolution of Antimony from SLibnite . . . . . 174 Godeffroy (R.). Silicotungstates of Cmiuin and Ruhidium . . . 175 V1.-Observations on Fluid Cavities by Walter Noel Hartley .. 241 VI1.-On Potassium Tri-iodide by George Stillingf leet Johnson Daniel1 Scholar of Xing’s College London . . 249 VII1.-Researches on Colein by A. H. Church . . 253 1X.-On some Derivatives of Dithymyl-trichlorethane by Dr. Emil Jager . . 262 Heumann (Karl). Theory of Luminous Flames. . . . . . 265 Tollens (B.). Specific Rotatory Power of Glucose . . . . . 265 aarey-Lea (M.). Sensitiveness of Silver Bromide to the Green Rays a8 modified by other substances . . . . . . . . . 266 Fleming (A.). Polarisation of Electrodes in Water free from Air . . 266 Pettersson (Otto). Molecular Volumes of Sulphates and Selenates . . 267 Engler ((2.). An Tmprovement of Hofmann’s Vapour-density Apparatus 269 Leu b e (W.).Employment of Compressed Air in filtering Solutions. . . 270 Tollens (B.). Lecture Experiments :-1. Decomposit.ion of Glass by Boiling Water. 2. Demonstration of the presence of Alcohol in Beer or Wine. 3. Ascent of Water caused by Spontaneous Evaporation . . . . 270 Inorgamic Chemistry. ;;3 c ho big (Ern s t). Purification of Hydrogen Gas fop Analytical Pu~poses . 271 Yadiiii ((3.). Preparation of Iodic Acid . . . . . . . 271 Sansoni (M.) and G.Capellini. Precipitated Sulphur . . . . 272 Naumann (A.). Behaviour of Bromine and Sulphur Bromide to Hydrogen Sulphide . . . . . . . . . . . . 272 Hampe (W.). On Boron . . . . . . . . . . 273 Chambon (E.). Phosphorus Oxybromochloride . . . . . . a74 Geutlier (A.). On the Constitution of Phosphorus Bromochlorides and on “ Molecular Compounds ” .. . . . . . . . 274 Ponndnrf (A. I,.). Hypophosphorous Acid. . . . . . . 275 Qe ut h er (A.) . Constitution of Phosphorms and Hypophosphorous Acids . 2’76 Itammelsberg ((3.). Composition of the Phosphites . . . . 277 C!Iiiappe (P.) and 0. Malissi. Preparation of the Iodides of Potassium and Sodium and of Potassium Bromide . . . . . . . 277 B e r t helo t (M.). Potassium Thiosulphate .......278 Stahlschmidt (C.). Chemical Constitution of Chloride of Lime ...279 Leeds (A .R.). Zinc Hydride .Reduction of Silver Nitrate by Hydrogen .282 Gramp (F.). Action of Nitric Acid on Mercuric Sulphide ....282 Rammelsberg (C.). .Atomic Weights of the Metals of the Cerium Group .282 Bertrand (A.).Solubility of Lead Carbonate in Ammonium Butyrate .283 Thurach (Hans) .Preparation of Pure Bismuth and of Bismuth Com- pounds ... .........283 Neville (R.H.C.). A Compound of Chromium and Arsenic ...283 Soldaini (A.). Method of preparing Ferric and Cupric Oxides from the Sulphates so as not to obtain Basic Sulphates ......283 Mineralogical Chemistry . Cloud (J .C.). Atacamite ..........284 D a bney (C .W.). Cinnabar from Oregon . .....284 Typke (P .C.W.). A new Nickel Mineral from New Caled onia ...285 Harrington (B .J.). Pyrrhotite from Elizabethan Ontario ....285 Thurach (Hans) .On Substances which accompany Molybdenum-glance .285 Brush ((3.J.). Durangite ..........286 Hawes (G .W.). The Rocks of the "Chloritic Formation" on the western border of the New Haven Region .........286 Rchulze (E.).Analysis of the.Ash of Lignite ......287 Smith (J .L.). Gas-wells in Pennsylvania .......287 Boudier (M.). Foreign Bodies in Snow .......288 Smith (J .L.). Carbon-compounds in Meteorites ......288 Wright (A .W.). The Gases contained in Meteorites .....289 Shepard (C .U.). The Meteoric Stone of Waconda .....290 Organic Chemistry . ron Pieverling (L.). Selenium-compounds of Ethyl .....290 Barth (M.). Action of Bromine on Sodium Ethylate .....290 Klien ((3.). Action of Sodium Ethylate on Trichlomcetic Acid ...291 Elien (G.). Preparation of Monochlorodiethoxylethane ....291 Wurtz (A.). A Polymeride of Ethylene Oxide .. ...291 Laufer (E.). Epichlorhydrin .........291 Chambon (E.).Action of Ethoxyl-compounds of Phosphorus on Phosphorus Chlorides and Phosphorous Acid ........292 Balbino (L.). Inactive Fermentation Amylic Alcohol .....292 Leitzenmayer (0.). A correction relating to the preparation of Glycol .293 Krusemann (H.D.). Reduction of Levulose ......293 Muntz (A.) and E.Aubin .Optical Properties of Mannite ....294 Baily (W.). Optical Properties of Starch .......294 grey (0.). Chlorinated Acetals and some Derivatives .....295 Taubert (A.). Reactions of Acrolein Hydrochloride .....295 Meissner (F.). Polybasic Compounds of the Acids of Nitrogen ...296 Geuther (A.). Decomposition of Phosphorus-compounds ....296 Werner (H.). Action of various bodies on Nitroethane ....297 Backunts (H.).Action of Chlorine on Acetonitril .....297 Bac kun t s (H.) and R .0t t o.Action of Alkalis on the Chloriiiated Aceto- nitrils .............297 Backunts (H.) and R.Otto.a-Monochloropropionitril ....297 Backunts (H.) and R .Otto.Constitution of Dichloropropionitril ..298 A t t er b erg (A.). On the Ferrocyanides of Wyrouboff .....298 Jager (J.H.). Behaviour of Melam to Sulphuric Acid .....298 Nencki (M.). Constitution of Guaiiamine and Cyanuric Acid ...299 W y 8s ((2.).Glyoxaline...........299 Ruoff (G.). Results of an Exhaustive Chlorination of Aromatic Substances .299 CONTENTS. 111 PAUE Gessiier (33.). The Exhaustivc ddini of Bromine on aome Aromatic Bodies . . . . . . . . . . . . . 300 Ladenburg (A).Condensation in the Ortho-group . . . . . 302 6 c11i 11 e r (R.) au?t R. 0t t 0. Preparation of Benzene and Paratoluene Sulpliydrates . . . . . . . . . . . . 306 Schi ller (F.) and R. 0t t 0. Formation of Benzene and Paratoluene Disulphidcs . . . . . . . . . . . . 306 Gabriel (S.). Todo-:mcl Bromazacoiizpounds of Benzene . -. . 307 6iiej-er (11.). On tlie Yht1i:ilin and Yhthalidein of Phenol . . . 307 R e i c 111 (C.) . Soinc New Phenol-colours . . . . . . . 310 Scurati-Manzoni (G.). The Action of some Reagents on the principal 0rg:tiiic Colouring-matters . . . . . . . . . 310 rail Be ii L’ s s e (J.J.). Action of Silrer Nitrite on Benzyl Iodide . . . 310 x ail Re n e s s e (J. J.). Action of Potassium Cyanide on the Isomeric Ortho- nitronietabroniobenzoic Acids .. . . . . . . 310 Miohaelis (A.). Aromatic Arsenic-coml~ouiicls . . . . . 311 Schiller (R.) and R. Otto. Kew Method of Preparing Benzenesulphinic ilnd Toluencsulphinic Acids . . . . . . . . . 312 Pa uly (C.). Beiizenedisulphinic Bcid . . . . . . . . 312 Piccnrd (J.) and A. Huinbert. Resorciiidisulphonic Acid . . . . 31%Gijt iig (C.). Ethyl-coinpounds of Salicylic Acid . . .. . . 313 Suliiff (R.). A series of Compounds derived from Aldehyde-ammonia . . 313 Hepp (E.). Some Aldeliycle-compounds . . . . . . 314 Lippinann (E.) and J. Hawliczek Artificid Oil of bitter Almonds. . 315 Lippiiiaiiii (2.)aid J. Hawliczek. JSitrobenzoyl . . . . . 315 Gessncr (E.). On the Naphthalenesulphonic Acids . . . . . 315 l€ausmaiiii (0.).Some Derivatives of a-and ,&Naplithoic Acid .. . 31’7 Emiiierliiig (A.) and C. Engler Spthesis of Indigo-blue . . . 321 Englc~r((2.). Preparation of Indol . . . . . . . . 321 Eiigler (C.) and Janeclie. Properties of Iiidol . . . . . . 322 15’ur t z (A.) Rvsaniliiie and Fuclisine . . . . . . . 322 I)]*ap cr (J.C.). Effect of Temperature on the Power of Solutions of Quinine to Rotate Polarisecl Light and Suggestions regarding the Preparation to be used vheii Quinine is ernplojecl as a Medicine . . . . . 322 Kopp (A ). Transforniation of the Three Bromocinchonines into the corre- sponding Ox-jbases . . . . . . . . . . . 353 Bpugnatolli (T.) aiicl E. Zenoni. On an Alkalojid found in Damaged Turkey-corn nnd in Nilclewed Maize-bread . . . . . 323 Hardy (E.).Jnboraiicli (Pilocarps pitmatzts) . . . . . . 324 van Gelclern (€1.). A Substance in Ueerresenibling Colchicine . . . 325 Bizio (G.). Gelatin coilsidered as a Reducing Agent . . . . 325 Citzencuve (P.). Researches on €€Ematin . . . . . . . 326 cle Lucn (S.). Essence of Achillea agerattm. . . . . . 326 Y. Gerichten (E.). Apiol . . . . . . . . . . 326 Plzysiological Chemistry. P flugc 1’ (Z) lnflueiice of Temperature on tlie Respiration of Cold-blooded dizinials . . . . . . . . . . . . . 327 Sc1ia.a YZ (Hugo). Relation between Tissue-iiietamoi.~hosiR and Body-tcmpwature in Amphibia . . . . . . . . . . 327 c! olnsant i (Giuseppe). Influence of ttlie Surrounding Temperature on tlie Tissue-metamorphosis of Warm-blooded Animals .. . . . 327 Colasaiiti (Guiseppe). A Contribution to the Theory of Fever . . 328 S c 11r o cl t (M.) . Researches on the Bones of a Carnivorous Animal . . 328 Picart1 (I?.). Urea in tlie Blood . . . * ..... 339 Floyd (2’. B.). Clieiriical Charactcr of the Pigment of the Negro-skin . . 329 Yalkowski (K.). Phenol-forming Substance in Huniaii Urine . . . 330 Pecile (Doincnico). Guaniizeiii Pigs’ Urine . . . . . . 530 CONTENTS. v Manganese Bronze . . . . . . . . . . . . 384 van Slooten (W.). Ash of Hard Carbon from Coal-gas Retorts . . . 335 Paterson ((3.). Compositionof anIronDeposit . . . . . . 355 Graham (A. McD.). Effect of Aluminium Sulphate on Sewage . . . 355 Ballard. Experiments on the Alcohol from Barbary Figs . . . 355 Tibrans (0.).Use of Phosphoric Acid in the Manufacture of Beet-sugar . 357 Boussingault. Experinients to Demonstrate the Conversion of Sugar when added to Fermenting Must and Marc of Grapes . . . . . 358 Henniges (A.). Preparation of Anthraquinoue by the action of Chloride of Lime Solution and a Metallic Salt on Anthracene . . . . . 360 Abadie (A.). Black-blue Colour for Paper . . . . . . . 361 Rapid Destruction of Linen Cloths . . . . . . . . 361 Causes and prevention of Stains Spots and other defects in Dyed Cloths . 362 The Solution of Caoutchouc . . . . . . . . . . 363 Adlung (M.). The present state of the Rice-starch Manufacture . . . 363 Jobst (J.). Coto'in . . . . . . . . . . . 480 Jobst (J.) Coto-barks and their Crystalline Constituents .. . . 480 Lang (J.). Deriratives of the Bile-acids . . . . . . . 481 Physiological Ch.ernistry . Pfluger (E.). Influence of Respiration on the Metamorphosis of Tissue . 482 Finkler Dittmar and Ernst Oertmann. Influence of Respiration on the Metamorphosis or"Tissue . . . . . . . . . 482 Fink ler D it tma r. Isopepsin . . . . . . . . . 483 Schmidt (A). Experiments on the Coagulation of Fibrin . . . . 483 Wolffberg (S.). Origin and Accumulation of Glycogen in the Animal Organism . . . . . . . . . . . . 484 Bernard (C.). Critical Experiments on tlieForniation of Sugar in the Blood 485 Picard (P.). Urea in the Blood . . . . . . . . . 486 Banmann (E.) and E. Herter. BehaTiour of Phenols in the Animal Body 486 v. den Felden (R.) and E.Baumann. Behaviour of Terpenes in the Organism . . . . . . . . . . . . . 487 Felt z (V.) and E. Rit ter. Action of Fuclisine introduced into the Stomach and the Blood . . . . . . . . . . . . 487 Chemistry of Vegetable Physiology and Agriculture. Wittstein (G. C.). Examination of the Sunflowey . . . . 487 Pierre (I.). Sugar in the Leaves of Beet . . . . . . . 487 Wittstein (U.C.). Ash of Euphorbia anzygdalokles and of IIernziaria glabya . . . . . . . . . . . . . 487 Kosmann (C.). Study of the Ferments containd in Plants . . . 488 Analytical Chemistry. Chapman (E. J.). Blowpipc Reactions . . . . . . . 489 D i b bit s (H. C.). Decomposition of some Ammonium-salts by Potassium- and Sodium-salts . . . . . . . . . 490 Corue (M.).New Reaction of Iodides and Iodates .. . . . 491 Brugelmann (G.). Estimation of Sulphur in Coal-gas . . . . 492 Anniversary Meeting (March 29th 1877) . . 493 Balance-sheet (March 28th 1876 to March 27th 1877) . . . 529 PAPERS READ BEFORE THE CEEMICAL SOCIETY:-X1V.-On the Estimation of Urea by means of Hypobroinite By A. DuprB Ph.D. F.R.S. . . 534 XV.-On the Determination of Urea by means of Hypobromite of Soda by Dr. Maxwell Simpson F.R.S. and C. O’Keeffe F.C.S. . . 538 XV1.-The Derivatives of Di-isobutyl (Preliminary Notice) byW. Carleton-Williams . . 541 XVI1.-Dinitroso-orcin and Dinitro-orcin by John Sten-house LL.D. F.R.S. and Charles E. Groves . . 544 XVII1.-Note on Gardenin by John Stenhouse LL.D. F.R.S. and Charles E. Groves .. 551 X1X.-Isomeric Nitroso-terpenes by William A. Tilden,D.Sc. Lond. and W. A. Shenstone F.C.S. . . 554 XX.-Preparation o€ Copper-zinc Couples by J. H. Glad-stone Ph.D. F.R.S. and Alfred Tribe P.C.S. . . 561 ABSTR.ACT8 OF PAPERS PUBLISHED IN OTHER JOURNALS :-General and Physical Ckemistry. dckroyd (W.). Selective Absorption ........ 571 Abneg (Captain). Alkaliiie Development of the Photogmphic Image . . 572 Guerout (A.). Researches on thc Coeficient of Capillarity .... 573 Thomsen (J.). Thermochemical Researches ...... 574 B att a11 die r. I)ecomljositioii of a Solution of Potassium lodide by Light . 577 Corne (J.). Action of Phosphorus on Iodates in presence of AtmosphericOxygen .............. 578 Pellet (H.). Precipitation of Phosphoric Acid by Amnioiris in presence of Lime Baryta Alumina and Ferric Oxide ......578 Campani (G.).Mutual Action of Potassium Iodide and Lead Sulphate . 579 Emerson-Reynolds (J.). Glucinum its Atomic Weight a.ndspecific Heat 579 Mineralogical Chemistry . Field (F.). Ludlamite. a New Cornish Mineral ...... 580 Laspeyres (H.). Nickel Ores ......... 581 Schrauf (A.). New Minerals from the Graphite Deposit of Mugrau. in Bohemia ............. 581 Boricky (E.). On some Minerals from the Silurian Iron-stone Deposits and the Coal-formation of Bohemia. resembling Ankerite. and on the Chemical Constitution of the Minerals classed with Ankerite ..... 581 Klein (P.). Gypsum Crystals from Sutel ....... 582 How (H.). The Stilbite (desmine) of Nova Scotia ......682 Dana (E.). Staurolite Crystals from Fannin. Georgia ..... 582 Dana (Ed.). A Twin Crystal of Pyrrhotin ....... 583 v. Zepharovich (V.). Bournonite from Waldenstein. Carinthia and from Pribrani ............. 583 v. Zepharovich (V.). Red Vanadinite from the Lead-works on the Obir. near Kappel ............ 583 v. Zepharovich (T.). Sulphur from Cianciana and Lercara. in Sicily . . 583 D oel t er (C.) . The Mineralogical Composition of the Melaphyr and Augitic Porphyry of South Tyrol .......... 584 Organic Cliemisty-y . E hard (E). Action of Chlorochromic Acid on Organic Bodies ... 584 Claesson (P.). On the Mercaptides and certain Sulphides of Ethyl . . 585 v. Pieverling (L.). Mjrioyl Alcohol and some of its Derivatives . .586 \iTiurtz (A.). Somc Derivatives of Dialdol ....... 588 Miintz (A) cnd E. Aubin . Optical Propcrties of Maniiite .... 589 Lescoeur . Purification of Valeric Acid ....... 589 Erlenmeyer (E.). Normal Valerie Acid from Normal Caproic Acid . . 590 Champion (P.) and H. Pellct . Nitrostearic Acid ..... 590 Conrad (M.) xnd W. R . Hodgliinson . R-cw Method of Sjntliesis of Aromatised Fatty Acids .......... 590 Bottinger (C). ‘11k Acids C,H,O ........ 590 Pleischcr [E.). Citric Acid .......... 591 Erlenmeyer (E.). Simple nIcthocl of prepirii~gMetallic Cjanider . . 591 He in t z (\I-.).I)eli~ilrotriacctoi:amilie ........ 591 Heintz (W.). A Sixth Acetone-base ........ 592 Heintz (W.). Alcoholic Bases formed bj the IIjdrogeiiisation of Di-ad Ti4-acet onaniine ...........592 Heintz (W.). A New Platinum-salt containing two Ammonium-bases . . 592 Papasogli (G). Researches on Xssence of Turpentine ..... 592 Paternb (E.) and P. Spica. Cumol ........ 593 v. Zepb arovich . Crystallo-optical Investigation of certain Caiiiphor Deri-vatives ............. 594 Laubenhcimer (A.). Ortlio-dinitro-coml~oundu ...... 594 Limpricht (H.). Benzene-sulphonic Acid aiicl its Derivatives ... 595 Mazzara ((3.). Nitro-derivatives of Salicylic Alclehjde .... 59’7 Liebermaiiii (C.). Researches on the Naphthalene Group .... 597 Lieberniunn (C.). Studies in the Anthrnquinone Group .... 609 Eretzsch mar (A.). Action of Acetyl Chloride and of Benzoyl Chloride on certain Amides ........... 614 Bernthseii (A.). Tliiamides of Monobasic Organic Acids ....616 Fischer (E.). Aromatic Hydrazin-compounds ...... 619 Kirchmann (W.). Preparation and Estiniation of Amines .... 620 Xtard (A.). Preparation of Alkaline Nitrites ......685 Godeffroy (R.). Caesium and Rubidium Compounds . . . . . 685 Stein (W.). Ultramarine . . . . . . . . . . 666 Yhilipp (T.). Constitut. ion of LTltramarine .......68G Fremy (E.). Irisation of Glass . . . . . . 687 Gtlutzel (E.). The Oxide of Titanium obtained by the Solution of Titanium in Acids ;and some new Titanium Compounds ..... 688 Fre y (E.). Preparation of Earth-metals ......689 Eder (T.M.). Double HaloPd Salts of Cadmium ......689 Millot .A Crystallised Dicalcric Phosphate . . . . . . . 689 Friedel and Sarasin .Crystailine Phosphate and Areenate of Copper .690 Mu ir (M.M.P.).Action of Water and of Saline Solutions npon Lead .690 St olba (F.).Silicofluorides of Iron and Cobalt . . . . . 690 Stierlin.Sublimed Moljbdic Acid as an Object for the Polarising Micro- scope .............690 itirneralogical Chemistry. G ei n it z (F.E.). Mineral Pseudomorphs ....... 601 Seyms.The relation of Franklinite to the Spinel Group . . . . 701 A new Locality of Heavy Spar . . . . . . . . . '702 Brezina (A.). Strueverite . . . . . . . . . . '702 Wright (A.W.). Gases enclosed in Meteorites ......702 Planehard (E.). Formation of Natural Sulphuretted Waters . . . 704 Organic Chemistry . 9 ilvestri (0.). Hydrocarbons of the Paraffin Series found in a Lava from Etna .. . . . . . . . . . . . 704 N en b a ue r (C.) .Preparation of Chemically Pure Grape-sugar ...705 Salomon (G.). Occurrence of Grape-sugar in Alcohol ....705 Miguel (P.). Silicon Sulphocyanate . . . . . . . 705 Merz (V.) and G-.Ruoff.Action of Aromatic Substances on excess of Iodine Chloride . . . . . . . . . . . 706 Xeilstein (F.)and A .Kurbatow.Chlorinated Derivatives of Benzene .'706 Pateriid (E.) and P.Spica.Propgl-benzene and Propyl.pheno1 ...707 Ihle (R.). Cresols and Cresotic Acids . . . . . . . . 708 'rieniann (F.) and H.Herzfeld .Synthesis of Coumarin from Salicylic Aldehyde . . . . . . . . . . . . 708 Mi g u el (P.) .Action of Alcohols of the Fatty Series upon Benzoyl-sulpho- carbimide . . . . . . . . . . . . 709 Klin ger (H.).Action of Phosphorus Pentachloride on Phenyl- and Para-tolyl-oxamethane . . . . . . . . . . . 710 (2u ar e sc h i.Preliminary Note on Naphthalene Derivatives . . . . 712 Jorgerisen (S.M.). Herapathite and similar Periodides . . . . 713 Kirchmann (W.). Improved Method of obtaining Nicotine Conine and Sparteine . . . . . . . . . . . . 716 Mopp (A.). On the so-called Resina Guaiaci aroinatica v.odfxata ..716 v .Gorup-Besanez (E.). Ostruthin . . . . . . . . 717 Stenhouse (J.) and C.E.Grov es.Picrorocellin . . . . . 718 Yaternb (E.) and A .Oglialoro.Picrotoxin . . . . . . 719 Perier .The Insoluble Matter from Opium Extract . . . . . 720 Constituents of Tolu Balsam . . . . . . . . . . 720 Tltresh (J.C.). Capsaicin . . . . . . . . . . 720 G uichard .Xanthiunz bpinosurn .. . . . . . . . 720 J ohansen (E.). Chemi,itry of the Barks of the Oak Willow and Elm .720 Woiff (R.). Deroniposition of Ctintharidin in Cantharides . . . . 722 Se h u t z e n b e r g er (P.).New Derivative of Albuniino'id Substances ..725 CONTENTS. 111 Schmidt (A.). Coagulation of Fibrin . . . . . . . 726 H am m ar s t e n (01of) . Contributions to the Theory of the Coagulation of Fibrin . . . . . . . . . . . 726 v. Mering. Formation of Glyro en in the Liver . . . . . 728 Weiske (H.). Composition of 8orn and of Cmy-fish Shells . . . . 728 Selmi (F.). Some Volatile Products of the Putrefaction of Brain-matter . 730 Mu n k (Ira). On the Form of Combination of Urea in the Liver . . . 730 Haus (H.).A Levorotatory Substance in Normal Urine . . . . 731 Bill (J. H.). Double Decomposition of Potassium Bromide and Sodiuni Chloride in the Animal Organism . . . . . . . . 731 G e dl (M.). Influence of Salicylic Acid and Sodium Salicylate on Bodily Tem- perature . . . . . . . . . . . . . 732 Chemistry of Yegetable Physiology and Agriculture. Briosi (CX.). The Function of Chlorophyll in the Vine . . . . 732 Jellett (J. H.). Change of Composition in Potatoes during Disease . . 732 V o e 1 c k e r (A.) . Phosphatic Guanos . . . . . . .733 B o eh m (5.). The Plant-nourishing V alue of CRlcium Salts . . . . 735 B o u s s in g au 1 t. Influence of Soil on the Nitrification of Azotised Organic Substances in Manures . . . . . . . . . . 735 AaalyticuI Chemist?y.Wsring ton (R.). Determination of Nitric Acid by Indigo . . . 735 Berg (Paul). Estimation of Boric Acid by Baryta . . . . . 736 B ru g e 1ma nn ((3.). Volumetric Estimation of Sulphnric Acid by Barium Chloride Solution in Acid Liquids . . . .... 737 tained in Quantitative Analyses . . . . . . . . /3/Jean (F.). Determination of Alkaline Sulphates . . . 738 nium Molybdnte . . . . . . . . . . . C h ampi o n and P e 11 e t. Volumetric Estimation of Arsenic. . . . 739 as for the Estimation of Sulphur in Coal-gas . . . . . . 739B r ii gel m a n n ((3.). Volumetric Estimation of Arsenic Acid and Phosphoric Acid by Uraniuiri Solution . . . . . . . . . '741 Brugelmann ((3.). Estimation of Sulphur in Coal-gas . . . 741 €7 ino t (L.) and A.Bert rand. Estimation of Carbon Disulphicie in Alkaline Sulphocarbonates . . . . . . . . . . . 744 Per r o t (E.). Estimation of Sugar by Standard golutions . . . . 7'4 4 J,owenthal (J.). Estimation of Tannin . . . . . . . 745 K o p p en h a u e r (W.F.). Volumetric Estiniation of Phenol . . . 746 Guyot (P.) and R. Bidaux. Detection of Rosolic Acid in Presence of Fuchsine. . . . . . . . . . . . 747 B en n e t t (J.). New Tests for Anihracene . . . . . . . 748 Hager (H.). Testing of Quinine-salts for Strychnine and Morphine . . 748 Pape (0.). Some Reactions of Vegetable Poisons . . . . . 749 B 6 champ (A.) . Detection of Puchsine and other Colouring Matters . . 749 Fordos (a. M.). Detection of Fuchsine in Wines . . . . . 750 G a u t i er (A.).Dilution of Wines-I nfluence of Plastering Fining Brandy- ing &c. on the Weight of the Extract . . . . . . . '750 Hilger. Identification of Foreign Colouring-matters in Red Wines . . 751 Magnier de la Source (L.). Determination of the Residue of Wine. . 752 Strohl. Detection of Mineral Acids in Vinegar . . . . . . 752 Lev e s ie (0.). Composition of Coffees . . . . . . . . 752 Franz (A.). Testing Roasted Coffee for Chicory . . . . . . '752 Vohl (H.). Detection of Foreign Mineral Substances in Flour . . . 753 H u s son. Some Reactions of Hemoglobin and its Derivatives . . . 753 8chwarz (V.). Testing of Aqueous Liquids for Blood . . . . . 754 Analysis of Soap . . . . . . . . . . . . 755 Technical Chemistry. Rot t ier and Waldach.Photography-Researches on Iron Developers . 75 Ca p it a in e (F.). Preparation of Soluble Glass from Fossil meal . . . . 75 4 Grot he (H.). Use of Soluble Glass in the Textile Industry . . . . '757 Extraction of Sulphur . . . . . . . . . . . 759 E r 1 e nm eyer (E.). Extraction of the so-called "Soluble Phosphoric Acid " from Superphosphates . . . . . . . . . . 759 Gautier (4.)Dephosphorisation of Iron Ores . . . . . . 769 Blooring Slabs. . . . . . . . . . . . . 760 PAPERS READ BEFORE THE CHEXICAL SOCIETY :-PAGE ABSTRACTS OF PAPERS PUBLISHED IN OTHER JOURNALS :-General and Physical Ohernistidy. Pictet (Raoul). Application of the Mechanical Theory of Heat to the Study of Volatile Liquids. Simple relations between the Latent Heats CONTEXTS.PAQR ‘li*evc and Ilnrnssicr. Action or ilcids on Troii . . . . . i75 Kimball (A4. S.). Some Clinngca in the 1’1iJsical I’roperties of Stccl 1)i.o- dacccl by Teruperiiig . . . . . . . . . 175 illheralogica1 Cliemistry. Gert t h (F.). Somc American TTacadium Xinerals . . . . . 175 Phipson (T. L.). ‘The Tripolite of Bnrb;docls . . . . . . 177 Bertrancl (E,). Crystalline form of illeliiiopl1ane . . . . . 178 Tscherinak ((3.). On the Foriiiatioii of’ Meteorites arid OH T’olcaiiic Agency . . . . . . . . . . . . . 178 Maskelyne (X. S.). TlicPittecl Surface of Metcoi*ites . . . . 18J Thorpe (T. E.). C’ontributioiis to the 11istoi-j- of the Old Sulphur IVell Harrogate . . . . . . . . . . . 181 Oi-ga?iic ClleiizL’striy.Behrcnd (P.). Actioii of Sulph[tryl Cl~loricleon Alcoliols . . . . 182 Cahours (A.) and E. Demarqap. Rccipocal Actio:i of Odic Acid and tlie 3Iontlto:nic Slooliola ...... .. 183 Kin gz e t t (C 11. T.). Limited OnicltLtioii of Essential Oils ad Pre1iiniiiai.y Rqort on the Ethers . . . . . . . . . . 183 Kriiger (F.). Isomeric Suiphine-c~iupoiiiids . . . . . 186 Curie (J.)and A. nlillctt. Culiibinatioli of’ Cliloral ~11‘1 Acctyl Chloride . 188 Michael (L4.). Action of I’ot‘issiuiii Sdi)li~drste on Clilcral Hydrate . 188 Dittmar (W.). Note on RebJiil’s pIToriii:il l’yrotartaric Acid . . . 188 Losseii (W.) slid J. Zaiiiii. Etlicrs of’ IIydroriLiiiic Acids Etliyl1i)di-oxyl- . aniine arid Blct~~lli~drosyla~iiiii~ .. . . . . . 188 WTrouboff (11.). Researches on the k’errocpaiiitles . . . . . 190 TY. R. 13. I’seu losulphocyanogon . . . . . . . . . 3 93 Baeyev (A,). The Coinpoiids of Plitlialic Acid nitli the Plienols. Part I 193 Grim aux (E.). Tere1)htlialic dldeh?;ile . . . . . . . 206 Baumauii (E ). a-Cres?lsulphuric Acid . . . . . . . 206 Ans chutz (R.) aiidQ. Hclinltz. Piew Mode of Formation of Azobenzcne . 206 TC’acliendorff ((2.). Halo d Derivatives of the Nitrotoluenes . . . 207 Clitre (P. ‘l‘.). Two Kew Modificatioiis of niiiit~.oiiaplitlialene . . . 207 Cl& ve (P. T.). Xitro-and dinido-iiaplithj 1sull)honic Acids aiicl their Deri-vatives . . . . . . . . . . . . . 208 Pei-kiii (W. H.). Eote on some Krn Deriiatires of Anthracene .. 209 Roseiist iehl (A.).Simultaneous formation of two ‘I’riox~antiir~iquirioiies axid Synthesis of a new IsomeriJe of Purpuriii . . . . . 209 Anscllutz (R.) and G. Schultz. Action of Quick-lime 011 Pheaantlirei~e-quiiioiic . . . . . . . . . . . . . 210 Anschutz (R) and G. Scliultz. ~iti,oplieiiantllreneyuiiioiie . . . 210 Jijrgeiiseii (S. 31.). Herapthite and similar Ad Periodides . . . 2 10 Tappciner (€1 ). Oiidation of Cliolic Acid vitli Potassium Biuliromate ad k3ulphuric Acid. . . . . . . . . . . 213 Fa ss b e ii de r (R.) The Fluorescent Body in Afrop Belladomta . . 213 . Van’t Hoff (J.I€.). StJmx . . . . . . . . 214 Mitchell (I€. W.).Kote 011 Litmus . . . . . . . . 214 Pliysiologicnl Cliemistiy. Bunge (G.). Quantitative Aiiuljsis ofBloocl .. . . . 215 Heiss (E.). Can Inorganic Constitueilts be witlidramin from the Bones by tlie introduction of Lactic Acid into the Iiitestiircs . . . . . 216 Tl-eislie (H.). Researchcs on the foriliation of Hippuric Acid in tlie Or-gsiiisiiis of Herbivorous*Aninials supl)liel n itli clifiercnt kinds of Fodder 21‘7 ... COKTESTS. i11 FAG E Ustimowitscli (C.). Alleged power of Glycerin to rcplace Sugar . . 22O K ultz (E.). 011 tlie liifiueiice which tjiug the Ductus chiledorht~sexerts upon the amount of‘ Glycogen in the Liver . . . . . . 221 v. Jaksch (R.). Occurrence of Nurlein in the Hornan Brain . . . 221 Laptschinsky (X) C‘liernistrj of the Crvstalliiie Lens . . . . 222 Bastian (H. (2.). The Feruientation of Urine in reference to a Coinm~uiica- 09.) tion by Pasteur .. . . . . . . . . . Clbemistry uj. TTtyef ab7e Flqsiulogy aI ~(1A 91’icidtiwe. Bert liclot (11.). ALorptioii of Free Kitrogen bj-the p~~xiiimte principles of Vegetables uiider the Influcncc. of Atniosplicric Electricity . . . 222 Stut zer (A.). Tile Mc+nmorphuses of tlie Groups COOH,C1-1.0H,CI12 and CH in the Living Plant . . . ...... 223 Peligot (E.). Action of Boric Acid and of Borates on Vqetntion . . 223 Kiilirieinann (G.). Oiyanic Constituents of U:Lrley niid Mult . . . 23 1. 130 ussingault (11.). Vcgctatim of Maize coiiiiiiciiceiliii ail Atiiio>plierefree from C’i1rboih R11h~dr~de . . . . . . . . . 234 Bro iv ri (\IT. 8.). Aid! sis of the -4sL of the G rouiiil Pcn (-iiachis hypga?n) as cultivated in Virginia .. . . . . . . . . 225 3out in. Coinparatire -&iialyscs of Roots of l*iiics. . . . . . 226 FitL (A). Alcoliolic Fer;!wiitatioii . . . . . . . . 236 . Fitz (A.). Fcriiiiw.aiioii of Gl~~~c~riu . . .. . . . . 226 Amlyticcc1 Clieft,,is tmj. Pellet (H.). Sevcriil M(~thods of Clleinical Analysis . . . . . 226 Kopfer (F.). Uae of 1’lati:ium lii the ultimate Aiialjsis of Carbon Com-poullas . . . . . . . . . . . . . 233 Champion (P.) and H. Pellet. Estimation of Nitrogen TetroxiJe in or- gaiiic Substances. Clieinical Composition of r:wious Gull-cottons . . 228 Bremy (E.). A general Method of Anal>& of Vegetable Tisaues. . . 229 Dittmai. (W.). Proximate Coinpositioii of Coal Gas . . . . . 230 . Wanklyn (J. A,).Detection of Aluiri in Bread niid F~JLI~* . . . 231 Cameron (C. A). Estiiiiation of Colour iii JTater . . . . . 231 Brown (J. T.). Anthraceiie Testiiig . . . . . . . . 232 Pattinson (T.). An Abnormal Sauiple of Sew Milk . . . . . 232 prl LI te r (J.). Ansly& of Butter . . . . . . . . . 233 Duprb (,k.j. lletectioii of Coloui=iiigAIattei-s in IViiie . . . . . 234 Uouilhoii (E.). Detection of FLucli~ine in Winc . . . . . . 23% Teclmical ClwmIstry. I’_eligot (Z.). Coniposition of Ancient Glass mLlCrjstd . . . . 232 hcrii (S.). Yrcwiice of Copper in Cast-iron . . . . . . . 235 Crenshaw (9.D.). Stove-pipe Deposit . . . . . . . 235 Kern (X.). Preparation of some Colom.ed Firm used in Fyrotecliiiy . . 235 Keates (T. W.). Mode of Generatiug Sulphurous Acid as a Disinfectant .236 Fis c her (I?.). On the Temperature required in Leblanc’s Soda-process and the Composition of the Gases evolred . . . . . . . 237 Alkali from Sen-meed . . . . . . . . . . . 237 Tlioiiison (IT.). Action of diffeiwit Oils upon Copper . . . . 237 Manufacture of Large Csstiiigs of Kichel iiud Cobalt . . . . . 238 V~PP mann (F.). Anthraceiie Procluction ... . * . 239 Correction relative to a Communiration 011 l’anification in tlie 8 ace (&I.). United States and tlie Properties of the Hop as it. Ferment . . . 244.0 Tollens (B.). I~ijuriousCliaracter ot runny Objects made of India Xubber 2.10 TVolffhugel. Effect of Sewers Sc. 011 the PuritF of the Soil . . . 210 CONTENTS. PAPERS READ BEFORE THE CHEMICAL SOCIETY :-PAQB ABSTRACTS OF PAPERS PUBLISHED IN OTHER JOURNAI8:-General and Physical Chemistry... CONTENTS. PAGE ... iV CONTENTS. PAGE Morizzis (A.). The Natural Poison of the Human Corpse . . . 331 Vogel (H. W.). Spectroscopg of the Colouring Matters of Blood . . 331 Chemistry of Vegetable Physiology and Agriculture. Ri schawi (L.). Experiments on the Respiration of plants . . . . 331 M ay c r (A.). Dependence of Plant-respiration upon Temperature . . 334 Stutzer (H.). Action of Carbonic Oxide on Plants . . . . . 334 Fliche (P.) and L. Grancleau. Composition of Leares . . . . 334 Corenwinder. Presence of Sugar in the leaves of Beets . . . . 336 Wil son (P.B.). Silica in Grasses .. . . . . . . 336 Krusc. Analysis of roots of Pdix mas. . . . . . . . 336 Keller (J. L.). Chemical Examination of Piih-ling (L?/coprrlons6ZicZuni) . 337 v. Losecke-Hildbul*ghausen. Composition of Eat,able MushPooms . . 338 Amdyticnl Clze?nistfy. Stockmann (C.) Solution of Silicates . . . . . . . 3 40 Jacquemin (E.). Application of tlie Fcrrosopyrogallic Reagent to the Esti- mation of Bicarbonates in Wxtei. . . . . . . . 340 Wriglitson (F.). Quantitative Estimation of Metals bp Electroljsis . . 340 Kriiger (F.). Fluorcscein as an Indicator in Titration. . . . 341 Rosenfeld (Max.). Detection of Free Sulphur . . . . . 341 Casarnajor (P.). Estimation of Potassiiini as Acid Tartrate . . . 341 Bernard (C.) and L. Elirmann. On x Quick Method of Estimating Lime in presence of Maguesia and on tlie Application of Magiiesia to the Defecation of Sugar-liquors .. . . . . . . . 343 Jungcli (M.). Precipitation of Iron and Aluiiiina by Sodium Acetate . . 344 Al.essaiidri (L.) and C. Conti. Method fur detrcting tlie Adulteration of Lead Iodide . . . . . . . . . . . . 344 Pollacci. Phosphorus as a Test for Iodates. . . . . . . 344 Lepage. Method of Testing for Impurities in Potassiuin Iodide . . . 344 Jenkins (E. H.). Effect of Silicic Acid upon the Estimatjoii of Pho-phoric Acid by Ammonium Xolybdate . . . . . . . 344 Bohannon (R. D.) Zinc for AnalJtical Usc . . . . . . 34.5 Gawalorski (A.). Recovery of Ui-aiiinm Heaiclues . . . . . :545 Soldaini (G.A.). A New Reagent for the Lletection and Estiiiiatiori of Glucose .. . . . . . . . . . . . 345 Salleron (M.). Estimation of Alcohol by the Temperature of Ebullition . 343 Dott (D. B.). Davy’s Test for the purity of Cliloroform . . . . 346 Versmann (F.). Anthrileei1e Testing . . . . . . . . 347 Caspers (C.). Anthi.acenc Testing . ... 347 Prehault (A). Action of Iodine on Carininic Acid and on Haematin . . 347 Piiichoii (A.). Testing of Oils . . . . . . . . 348 Godeffroy (R.). Reagents for Aikalo’id Separations . . . . . 348 Pattinson and Stead. Estimation of Earleg-in Oatmeal . . . . 348 Estcourt (C.). Bntter Analysis . . . . . . . . . 348 Scutari-M anzoni (G.). liyposulpliita of Sodium (SO,Na,) as a Reagent in the Analysis of the Colouring Matters of Dyed Stuffs . . .349 Bayer (K. (3.). Estimation of Wool in Yarn . . . . . . 349 Technical Chemistry . Jurisch (K.).Deacon’s Process for the Preparation of Chlorine . . . 350 Extraction of Silver by means of Calcium Thiosulphate . . . . . 352 Nic t z k i (R.). Presence of Bulphocyanates in Cominercial Soda . . . 353 Alum-powder . . . . . . . . . . . . . 353 Bischof (0.).So-called Plastic Dinas-crjetitl . . . . . . 354 PAGE C 0 NT E NT S. .............................. PAPERS READ BEFORE THE CHEMICAL SOCIETY :-PAGE X.-On High Melting Points with special reference to those of Metallic Salts. Parts I1 and 111 by Thomas Carnelley D. Sc. . 365 XI.-On the Formation of Coummrin and of Cinnamic and other analogous Acids from the Aromatic Aldehydes by W.H. Perkin F.R.S. . 388 XI1.-Pignaentum 17,igrum the Black Colouring Matter of Hair and Feathers by W. R. Hodgkinson and H. C. Sorby . 427 XII1.-On the Corrosion of Lead by Water by G. Bischof . 488 . ABSTRACTS OE PAPERS PUBLISHED IN OTHER JOURNALS :-Ge.lzerd and Physical Chemistry. Heileseii (W.). The Effect of Heat on Voltaic Circuits completed by an Electrolyte ............ 429 Kohlrauscli (F.). Electric Conducting Power of Water .... 429 Aymon n et. Relation bctwecn the Absorbing Powers of Bodies for Heat and their Clieniical Equivalents ......... 4.30 Miiller (F. G. C.). Rise of Temperature occiisioned by passing Steam into Saline Solutions and on the Ten perature of the Vapours from Saline Solutions .. . . . . . . . . . ,-430 Miiller (F.G. C.). Specific Weights of Gases ...... 431 Troost (L.) and P. Hautefcuille. On theErrors resulting from the dppli- cation of the Law of Mixture of Vapours in the Deterinination of their Density ............. 431 Aymonnet. On the Quantity of Heat Absorbed by certain Substances . 438 Horatmnnn (A). Dissociation ......... 4.33 Pfaundlcr (L.). On t,hc Soft and Semi-fluid States of Aggregation and on Regelation and Recrystallisation ........ 433 Pf aundler (L.). The Application of the Principle of Dissinrilar Molecules to the Explanation of the Plienolvena of Supersaturated Solutions Super- fused Bodies Spontaneous Explosions and the Gradual Crystallisation of Amorphous Bodies ........... 435 Grenfell (J.G.).On Supersaturated Saline Solutions .... 436 Petterson (0.). Molecular Volumes of Sulphates and Selenates ... 437 Meg er (Victor). Lecture Experiment to show the Increase of Keight on Burning a Taper ........... 43’7 Woliler (P.). Beliaviour of Ptrlkidium in an Alwliol Flame. ... 437 Mignon and Rouart. Note on a Manometric Apparatus .... 437 .. 11 OONTENTS. PAGE Irtorgartic Chemistry. Berth elo t (M.). Does Ozone combine with Free Nitrogen in presence of Alkalis to form Nitrites and Nitrates . . . . . . 438 Miiller (F. G. C.). Synthesis of Water. Lecture Experiment . . . 438 Heuni ann (K.). Apparatus for Demonstrating the Manufacture of Sulphuric Acid . . . . . . . . . . . . . 438 Hensgen (C.). Action of Dry Gaseous Hydrochloric Acid on Sulphates at Various Temperatures .. . . . . . . . . 439 Urbain (V.). Dissociation of Sodium Bicarbonate at 100' . . . . 439 Bevan (E.). Note on a Crystallised Compound of Salt and Water . . 440 Wurtz (A.). Composition of Certain Phosphites . . . . . . 440 D it t e (A.). Action of Calcium Sulphate on the Sulphates of the Alkalis . 440 Filsinger (F.). Preparation of Lithium Carbonate and some new Coni-pounds of Lithium from Lepidolite . . . . . . . . 441 Pi sa n i (F.) . Crystallised Barium Silicate . . . . . . . 442 Lecoq deBoisbaudran. Crystalsof Gallium . . . . . . 442 Gourgeu (A). Capacity of Saturation of Manganous Acid . . . . 442 Deville (H. Sainte-Claire). Physical and Chemical Properties of Ru-thenium . . . . . . .. . . . . 4 $3 Mheralogical Chemistry. Daub r6 e. Simultaneous formation of Zeolites (Chabasite and Christianite) under the influence of Hot Springs in the neiglibourhood of Oran Algeria 4& Roscoe (H. E.). On two new Vandium Minerals. . . . . . 4'44 Dumas (E.). Composition of "Touchstone" ...... 445 Boussingault. Crystals of Magnetic Oxide of Iron formed in roasting a Spathic Mineral . . . . . . . . . . . 446 Bis c h o f (K.). Analysis and Determination of thc fusibility of three Bavarian Felspars . . . . . . . . . . . . . 446 Meiinier (S.). Devitrification of Vitreous Rocks . . . . . . 448 Vohl (H.). Carbonic Acid springs of the Kyll-Thal in theEifel (Preliminary Notice) . . . . . . . . . . . . . 448 Finot (E.). Analysis of the Gass of the Grotta del Cane .. . . 448 Organic Chemistry. Butlerow (A,). Di-isobutylene . . . . . . . . . 448 Balbiano (S.). Action of Sodium Hydrate on inactive Fermentation Aniylic Alcohol . . . . . . . . . . . . . 449 Bert oni (G.). Preparation of Ethyl Nitrate. . . . . . . 449 Bouchardat (G.). Rotatory Power of Mannite and its Derivatives . . 449 Prunier (L.). Action of Heat on Quercite . . . . . . . 450 Lound (L.). Effects of Heat on Cane-sugar in Aqueous Solution . . . 450 li'leury (M.). Researches on the Inversion of Sugar by Acids and Salts . 451 Villiers (A.). Researches on Melezitose . . . . . . . 451 B erthelo t (G.). Remarks on the preceding Paper . . . . . 451 Boussingault (?J.). Saccharine Matter cont,ained in the petals of Flowers .432 D obroslavine (A.). Differences in the Diastatic Reactions of' Starch from diff went Sources . . . . . . . . . . . 433 A be1 (F. A.). Composition of Gun-cotton . . . . . . . 453 Salkowsky (N.). Action of Bromine on Acetone . . . . . 453 Crommydis (C. 2.). Easy Method of preparing Glycollic Acid . . . 453 Idan of f. Diethyl-methjl-acetic acid . . . . . . . . 4-54 Cloez (S.). Modifications of Ehornargaric Acid produced by Liglit and Heat 434 Schalfeieff. Cerotic Acid from Beeswax . . . . . . 454 Bottiiiger (C.). Action of Hydrocyanic Acid on Pyruvic Acid . . . 455 Bunpe (N.). Electroljsis of Aqueous Solutions of Oxalic Acid . . . 455 ... CONTENTS. 111 PAGE Zay t z eff. Action of Iodide of Ally1 and Zinc on Ethyl Oxalate ... 455 Hunaus (P.). Citric and Aconitic Acids .. . . . ..455 Maurnen6 (M.) Observations respecting a Dextrogyrate Acid in Wine .456 Vi dau (M.) .Potassium Cuprocyanide and Potassium Palladiocyanide .4?16 Miguel (P.). Stains produced by Sulphocyanic Acid . . ...457 Gtuareschi (J.). Asparagine and Aspartic Acid .... ..437 Reym an (B.). Condensation-products of the Ortho-homologues of Benzene. 459 Staedel (W.) and L. Riigheimer. Action of Ammonia on Chloracetyl-benzene . . . .. . . ... ...459 Zagoumenny (A.). Diphenylcarbinol and some of its Derivatives ..459 Zincke (Th.). Action of dilute Sulphuric Acid on Kydrobenzoi’n and Isohydrobenzok .. . . .......460 Cahours (A.). Researches on the substituted Eugenols ....460 Schiller (R.) and R.Otto. Reactions of Aromatic Disulphides ...463 Schiller (R.) and R. Otto. Action of Sulphur trioxide on Sulphydrates .463 Pauly (C.). and R. 0tto. New formations of Benzene and Toluene Dioxy- sulphides .. . . . ... . . . . .463 Schiller (R.) and R. Otto. Ethyl Benzenesulphonate . ...463 Lieberman (C.). Constitution of Oxythymoquinone .. . . .463 Michael (A.) and T. H. Norton. Triiodoresorcin ... . .463 Thorner (W.). New Derivatives of Paratolylphenyl Ketone ...464 Pischer (0.). The l’hthaleins of Tertiary Aromatic Bases . ...4<65 B r un n er (H.). Action of Nitrils on the Haloid Ethers of Renzyl ..466 Wreden (F.)and Znatowich. Action of Hydriodic Acid on Naphthalene .466 Atterberg (A.). Derivatives of a-and /3-Diliitronaphthalene . . .466 At toer b e r g(A.).The Constitution of some Derivatives of Naphthalene .467 C 1 B v e (P.) .Dichlorinated Naphthalene corresponding with Nitronaphthyl- sulphurous Acid . . ... ..... .467 B aumann (E.). Phenylsulphuric Acids .. .... . 467 Klippert (L.). Paraxylenedicarbonic Acid .. ... ..468 B o t t inger (C.). Action of Zinc-dust on the Chlorides of Sulpharabromo-benzoic A cid ..........468 Sc h ill e r (R.) and R.01t 0. Plienyl Thiobenzoate and Paratolyl Thioben- mate ...........468 Schiller (R.) . and k.0tto. Experiments for Preparing the Thio ethers of Benzenesulphonic and Paratoluenesulphonic Acids . ....469 B1 at z b o c k e r (A.) .Benzyliboxylene and Benzoylisophthalic Acid ..469 Cleve (P. T,). Nitro- and Amidonaphthylsulphurous Acids and their Deri- vatives .. . . . . .. . . .. . 4 69 Cannizzaro (S.). Methyl Santonate . . . .. . ..470 Caniiizzaro (S ).Derivatives of Santonic Acid .....470 Sestini (F.). Photosantonic Acid . ... ... .47 1 S tr uever ((3.).The Crystalline Form of some Derivatives of Santonin .472 Graenvick (E ).The Action of Chlorocarbonic Ether on Amidophenol .472 Wi llgerod t. Action of a-Dinitrochlorobenzene on Acetamide ...473 Wi 11 g er o d t. Action of a-Dinitrochlorobenzene on Carbamidc ...4.73 Ueilstein (F.) and A. Kurbatow. Chlorinated Anilines .. ..473 Biedermann (R.). Disuccinylphenylenediamine .. ...474 Grie s s. New Researches on Diazo-compounds. Constitution of Compounds of Diazobenzoic Acid . .. . ... . . ,474 Mavin6 (W.). Taxine a Poisonous Alkalo’id contained in the Leaves and Seeds of Tuzus 6accafa (L.) ..... .. .476 Masing (E.). Alkalo’ids of Celandine (Chdido&zm majiis) ...477 Liebermann (C.) and M.Waldstein. Emodin from the bark of Rhznziius-frangula ... . .. . . . . . ..477 Nietzki (R.).A new Glucosicle in the Flowers of Ckhorium I/ityBus ..477 Van’t Hoff (J.H.) The Volatile Oil from Stjrax . . ...4.78 de Montgolfier (J.). Patchouli Camphor ... . . .4.78 Cec 11. Colouring-matter of Viridic Acid .... . ..478 Hertz (I.). Shell la(. and Sarcosinic Acid . . .. . . . 473 iv CONTENTS. PAGE C 0N T.E N T S. .............................. PAGE Ir~o rganic Chemistry. CONTENTS. PAGE CONTENTS. PAPERS READ BEFORE THE CHEMICAL SOCIETY:-PAGE XX1.-On the Coal-gas of the Metropolis.By T. S. Hum-pidge . 621 XXI1.-On the Theory of the Bunsen Lamp. By T. E. T h or pe, Ph. D. F.R.S.E. 627 XXII1.-On the Influence exerted by Ammonium Sulphide in preventing the Action of various Solutions on Copper. By F. W. Shaw Student and Thomas Carnelley D.Sc. . 642 XX1V.-On certain Bismuth-compounds. By M. M. Pat tison Muir F.R,S.E. 645 XXV.-Additional Note on a Process for Estimating Bismuth Volumetrically. By At. M. Pattison Muir F.R.S.E. . 658 XXV1.-On the Solveat Action of various Saline Solutions on Lead. By M. M. Pnttison Muir F.R.S.E. . 660 XXVI1.-Nohes on Madder Colouring Matters. By E daard Schunck Ph.D. F.R.S. and Hermann Roemer Ph.D. 665 ABSTRACTS OF PAPERS PUBLISHED IN OTHER JOURNALS General and Physical Chemistry.v. L e pp el (F.). Spectroscopic Reactions of Magnesium Salts. . . . 676 Lommel (E.). Fluorescence . . . . . . . . . 676 Fuchs (F.). Division of the Positive Metal in the Galvanic Circuit between Two Acids . . . . . . . . . . . . 677 Herwig (H.). The Movements of Electrified Mercury. -... 677 Schiel (J.). Nobili’e Rings on Gold . . . . . . . . 677 Siemens (W.). Dependence of the Electric Conductivity of Selenium 011 Heat and Light . . . . . . . . . . . 677 Elsaesser (E.). Electrolysis with Evolution of Hydrogen at both Poles . 678 Winkelmann (A.). The Specific Heat of Mercury . . . . . 678 Tollin ger. Thermal Changes accompanying the Solution of Ammonium Nitrate in Wzter . . . . . . . . . . 678 Berth e 1o t and Lou g u i n i 11 e.Thermal Researches on Citric Acid . . 680 Thorner (W.). Apparatus for Fractional Distillation in Vacuum . . 681 Bu 1 k (C.). Simple Exhausting and Compressing Air-pump . . . 681 Stein (S.). Construction of Scientific Instruments of Rock Crystal . . 682 Landolt (H.). Use of the Magic Lantern in Chemical Demonstrations . 686 Inorganic Chemistry. Markoe ((3. F. H.). New Method of Preparing Phosphoric Acid . . 683 Re m s e n (Ira). Phosphorus Oxychloride . . . . . . . 685 CONTENTS. PAQE ..* Phpiological Chemistry. PA&R Briigelmann ((3.). Purification of the Bariuni Snlphate Precipitates ob. rr Kern (5.). Estimation of Phosphorus in the Form of Ammonio-phosphorno: lybdic Salt .. . . . . . . . . . . '738 C h ampi on and I' e 11 e t. Estimation of' Phosphorus and Arsenic by Ammo- B r ii ge 1 m an n ((3.). New Method for the Gravimetric and Volumetric Esti- mation oi Phosphorus Arsenic Sulphur Chlorine Bromine and Iodine in Organic Substances and in Vegetable and Animal Compounds as well Vogel (H. W.). A Delicate Spectroscopical Reaction for Alumina and Mag- nesia . . . . . . . . . . . . . Kern (B.). Calculation of the Percentage of Chemically combined Carbon in Analyses of Steels by Eggwtz's Colornetric Method. . . . . Berthelot (M.). AnaIgses of Illuminating Gas . . . . . . CONTENTS. PAGE