CHEMICAL NOTICES FROM FOREIGN | amide, and when obtained thus preserves all its characteristic properties. It must therefore be regarded as acetamide hypobromite, and its formula must be written CH3-CO-NH2.BrOH. Moreover, the substance Hofmann prepared by removing water from the preceding compound at 50°, and which he called brominated acetamide, must be a hypobromous amide, CH3-CO-NHBṛ; it is thus a secondary amide of acetic and hypobromic NOTE.-All degrees of temperature are Centigrade unless otherwise expressed. R Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Vol. cxlviii., No. 3, January 18, 1909. General Method of Preparing Trialkylacetic Acids. —A. Haller and Ed. Bauer.-The trialkylacetophenones of general formula C6H5.CO.C-R1, when heated with sodamide in a neutral solvent, such as benzene and its homologues, split up quantitatively, yielding the amides of trialkylacetic acids and an aromatic compound (hydrocarbon). The equation is R RII RII acids. Products of Saponification of Dioxalsuccinic Ether. Isopyromucic Acid.-E. E. Blaise and H. Gault.—The authors prepared dioxalsuccinic ether by the action of two molecules of oxalic ether upon one molecule of succinic ether in presence of sodium ethylate, and saponified it with concentrated hydrochloric acid at the ordinary temperature. The product which is obtained by evaporating the aqueous solution has the formula C6H4O5, and from this by the elimination of CO2 isopyromucic acid is obtained. Apparently hydrochloric acid lactonises the ether as well as saponifying it, and the product of the action is a d-lactone. Preparation of Aldehydes and Anhydrides of Acids.-A. Béhal.- Acetic acid reacts with benzyl chloride giving benzyl acetate and hydrochloric acid. În presence of the chlorides of zinc, antimony, or copper one molecule of C6H5-CHC12 reacts with one molecule of acetic acid, giving benzoic aldehyde, acetyl chloride, and hydrochloric acidC6H5-CHCl2+CH3CO2H= =C6H5–CHO +CH3–COC1+HC. Large quantities of polymerisation products of benzoic aldehyde are also formed. MEETINGS FOR THE WEEK. Rapid Preparation of Calcium Phosphide for the Production of Phosphoretted Hydrogen.-C. Matignon and R. Trannoy.-At a faint red heat, aluminium powder readily reduces tricalcic phosphate, the equation being 3(PO4)2Ca3+8A12=3P2Ca3 + 8Al2O3. The product is a brown mass, which, when left in the air, decomposes, MONDAY, March 1st.-Royal Society of Arts, 8. (Cantor Lecture). giving phosphoretted hydrogen and a powder consisting of a mixture of alumina and the phosphide. By the action of water on calcium phosphide phosphoretted hydrogen is readily and rapidly obtained, the only impurity being traces of hydrogen. "Modern Methods of Artificial Illumination," by Leon Gaster. Royal Institution, 5. General Monthly Meeting. Society of Chemical Industry, 8. "Some Requirements of a Colour Standard," by J. W. Lovibond, "Sulphur as a Cause of Corrosion in Steel," by G. N. Huntly. TUESDAY, 2nd.-Royal Institution, 3. "Evolution of the Brain as an Organ of Mind," by Prof. F. W. Mott, F.R.S. 3rd.-Society of Public Analysts, 8. "Composition of Cider," by B. T. P. Barker and E. Russell. "Composition and Analysis of Chocolate," by N. P. Booth, C. H. Cribb, and P. A. E. Richards. "Determination of Petroleum in Turpentine," by J. H. Coste. WEDNESDAY, Action of Sulphur Chloride on Metallic Oxides.F. Bourion. Sulphur chloride readily converts into chlorides even those metallic oxides with which a mixture of chlorine and sulphur dichloride gives poor results. The equation is 2MO+2S2Cl2 = SO2 + 2MCl2 + 3S, which shows that there is an excess of sulphur equal to three-quarters of that contained in the reacting sulphur chloride. Thus the lowest temperature at which the reaction occurs is THURSDAY, 4th.-Royal Institution, 3. "Problems of Geographical determined by observing when a deposit of sulphur appears, and the reaction is commenced at this temperature; the temperature is afterwards gradually raised to a red heat. With MnO2, MnO, NiO, CoO, and the oxides of the rare earth the action begins before the boiling point of sulphur is reached, and with chromium sesquioxide at a temperature above the boiling-point. Colour Reactions of Dioxyacetone.-G. Denigès.— In sulphuric acid dioxyacetone condenses with mono or polyphenolic compounds and certain alkaloids, giving stable colorations. These reactions are very sensitive. With codein a blue colour is obtained, with resorcin at the ordinary temperature a tint resembling that of alkaline dichromates, with thymol blood-red, and with 3-naphthol at the temperature of the water-bath a green coloration and a fluorescence of the same shade. The reactions with thymol and resorcin are particularly delicate. Nature of Hofmann's Brominated Acetamide.Maurice François.-The substance which Hofmann called brominated hydrated acetamide, and to which he attributed the formula CH3-CO-NHBr. H2O, really contains all its bromine in the form of hypobromite. It can be prepared by evaporating a mixture of hypobromous acid and acet Distribution in Mexico," by Hans Gadow, F.R.S. Chemical, 8.30. "Action of Anhydrosulphuric Acid on Triphenylsilicol," by G. Martin and F. S. Kipping. "Ignition Temperatures of Gases," by H. B. Dixon and H. F. Coward. "Diazo-oxyamido Compounds and the Influence of Substituting Groups on the Stability of their Molecules," by N. L. Gebhard and H. B. Thompson. "Tetraketopiperazine," by A. T. de Moulpied and A. Rule. Alkaloids of Senecio latifolius," by H. E. Watt. "Miscibility of the Pyridene bases with Water and the Influence of a Critical Solution-point on the Shape of the Meltingpoint Curve," by O. Flaschner. "An Interpretation of the Hantzsch-Werner Hypothesis," by M. O. Forster and P. F. Dunn. "The Triazogroup-Part IX., Transformation of Cinnamoylazoimide into Cinnamenylcarbimide (Cinnamenylisocyanate), by M. O. Forster. "Preparation of Dichlorocarbamide," by F. D. Chattaway. "Interaction of Methylenediamines or Methyleneanilines and Carbimides or Thiocarbimides-Thiotetrahydroquinazolines Methylene Ureas. Dicarbanilidomethylene Diamines and their Homologues," by A. Senier and F. G. Shepheard. "Letters of Queen Victoria," by the Rt. Hon. Viscount Esher, G C.B., &c. (By the gracious permission of His Majesty the King). 6th.-Royal Institution, 3. "Properties of Matter," by Prof. Sir J. J. Thomson, F.R.S. 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