Salts of Tetrasulphamino-platinous Acid.-Ludwig Ramberg and Sten Kallenberg. -When sulphaminic acid acts on platinous hydrate a colourless solution is obtained, from which crystals of the ammonium salt of tetrasulphamino-platinous acid separate out. The salt, which is only slightly soluble in cold water, has the formula (HAN)2Pt(SO3NH2)4.6H2O. From a hot saturated solution small needles separate, which are probably a lower hydrate. The potassium salt of the acid can be obtained by the double decomposition of cis- or trans-potassium dichloro-disulphamino-platinite with silver aminosulphate. Its formula is K2Pt(SO3NH2)4.2H2O; it is not isomorphous with the ammonium salt. Red Phosphorus.-Alfred Stock, Hans Schrader, and Erich Stamm.-Ordinary commercial red phosphorus is not a single substance, and its physical and chemical properties depend on the temperature at which it was made from colourless phosphorus. It is the visible part of the spectrum adjacent to the ultra-violet which converts colourless into red phosphorus. The influence of the temperature on the transposition is comparatively small. The temperature of ignition of red phosphorus in air is apparently very much higher than that generally stated. At 380° it begins to fume and become luminous, and as this is also the temperature at which it begins to give fumes of colourless phosphorus obviously it is these latter which catch fire in air, and not the red phosphorus itself. When heated vapour of colourless phosphorus is cooled it is found that the product contains more red phosphorus the higher the temperature to which it has been heated, but the duration of heating has no influence on the amount of red phosphorus. The hot vapour must be cooled as quickly as possible. Colourless and red phosphorus are chemically different from one another, and the difference is not due to polymorphism. Bulletin de la Société Chimique de France. = or Union of Iodine and Oxygen.-Marcel Guichard.The direct union of iodine and oxygen would be exothermic I2(gas)+05(gas) 1205(solid)+61 cal. (Berthelot) 45 cal. (Thomsen), and by the application of Matignon's rule it may be shown that at 173° the equilibrium tension in the system I, O, 1205 would reach 1 atmosphere. The reversible union of iodine and oxygen can be realisable over only a small temperature interval, if at all, and the author has found experimentally that the conditions of reversibility are very difficult to attain. Then aniline is added, and finally alcohol, whereupon a yellow crystalline precipitate separates. This is the double hyposulphite of bismuth and sodium, Carnot's reagent. It is very soluble in acidulated alcohol, while the potassium salt is only slightly soluble. Reactions of Sulphosalicylic Acid.-E. Barral.Bromine water gives a precipitate with salicylic acid, but none with sulphosalicylic acid. Mandelin's reagent gives an indigo coloration with sulphosalicylic acid and a green coloration with salicylic acid. Denigès' reaction for salicylic acid, with methylglyoxal, is negative with chemically pure sulphosalicylic acid. Millon's reagent gives a pink coloration with a trace of sulphosalicylic acid and an orange red coloration with salicylic acid. The action of heat on a mixture of sulphosalicylic acid, methyl alcohol, and sulphuric acid, produces an aromatic smell very different from that of methyl salicylate. When a solution of sulphosalicylic is boiled with a little ammonium persulphate a black or brown precipitate is formed, and disappears when the boiling is continued and more persulphate is added. Neutral acetate of lead gives no precipitate with solutions of sulphosalicylic acid or neutral sulphosalicylates. The addition of ammonia causes partial precipitation. Action of Quinone and Sulphonic Quinone on Divided Silver in Presence of Alkaline Haloid Salts. A. Seyewetz.-Quinone reacts with silver in presence of alkaline bromides to give an oxybromide of silver of formula Ag5Bry+Ag2O. It can be crystallised from ammonia in the form of transparent colourless crystals, which turn brown in the light. The sodium salt of sulphonic quinone in the same conditions gives silver bromide and not the oxybromide. If the potassium bromide is replaced by the chloride the action is much slower, and no oxychloride is formed, and quinone and sulphoquinone in presence of potassium iodide transform divided silver into its iodide. Atti della Reale Accademia dei Lincei. System Sb2S3-SnS. — N. Parravano and P. de of mixtures of antimony sulphide and stannous sulphide in different proportions and find that in all probability the compound formed is Sb2S3. SnS or Sn(SbS2)2. MISCELLANEOUS. Award. The Franklin Institute of Philadelphia, Pa., has awarded the Edward Longstreth Medal of Merit and diploma to Dr. Charles Baskerville, Professor of Chemistry and Director of the Laboratory at the College of the City of New York, for his investigations on the chemistry of anaesthetics (ethyl ether, chloroform, nitrous oxide, and oxygen). Change of Address.-Samuel Deacon and Co., the Preparation of Anhydrous Bromides.-M. Barre.well known firm of advertisement agents and contractors, When sulphur is added to bromine it dissolves, and a dark established at Snow Hill over a century ago, and who red liquid containing S2Br2 is formed. It is partially have occupied No. 154, Leadenhall Street for the last decomposed when heated at the ordinary pressure. Its fifty-seven years, have removed to No. 7, Leadenhall action on metallic oxides provides a very convenient method Street, nearly opposite. We understand their premises of preparing anhydrous bromides, especially when the have been acquired by a large Insurance Company for bromide formed does not fuse at the temperature of the reconstruction." experiment or when it is volatile. The method is less general than the corresponding method of preparing chlorides, for in some cases, e.g., with thoria, it yields the oxybromide. Isomeric Thujylalcohols and Thujene. L. Tschugaeff and W. Fomin.-Ordinary raw thujyl alcohol contains at least two stereo-isomers. One of them has already been described by Paolini; it is liquid and dextroPreparation of Double Hyposulphite of Bismuth rotatory, while the other is solid and lavoratory. By and Sodium.-Jean A. 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