Abstract
PARIS. Academy of Scences, July 17.—M. Armand Gaulier in the chair.—A. Haller and Ed. Bauer: Syntheses of substituted β-diketones, of ketonic ether-salts, and of enolic ethers by means of the sodium derivatives of ketones. The interaction of the sodium derivative of isopropylphenyl-ketone with benzoyl chloride gives two isomeric benzoyl compounds, one, the diketone dibenzyl-dimethyl-methane, from which a monoxime is readily prepared, and the other the enolic form, not combining with hydroxylamine. Other examples of similar reactions have been worked out. Chlorine and iodine compounds give different reactions in some cases.—A. Lacroix: The alkaline rocks of Nosy komba (Madagascar).—Ch. Ed. Guillaume: The modifications undergone by nickel steels after prolonged heating and on the action of the time. These measurements show the necessity of a preliminary tempering of nickel steels used in the construction of instruments of precision, and the possibility of calculating by extrapolation during a period of several years the length of a standard invar bar maintained between certain limits of temperature.—Paul Sabatier and A. Mailhe: Some new preparations of the benzylamines and of hexahydrobenzylamine. The general method employed consists in acting with ammonia gas upon the vapour of an alcohol at 300° C. to 350° C. in presence of a catalytic oxide, such as thoria. With benzyl alcohol the chief products of this reaction are benzylamine and dibenzylamine. Pure benzylamine, obtained by this method, treated with hydrogen at 170° C. to 180° C. in presence of a very active nickel gives ammonia, toluene, and hexahydrobenzylamine. The latter base was isolated, and its properties are described.—M. Bernstein was elected a correspondant in the section of medicine and surgery in the place of the late M. Engelmann.—M. Borrelly: Observations of the Kiess comet (1911?!) made at Marseilles Observatory with the comet finder. Observations of the comet and comparison stars are given for July 9, 12, 13, 14, and 15. The comet appeared as a globular nebula with a condensation at its centre, and was about the 8th or 9th magnitude.—M. Esmiol: Observations of the Kiess comet made at the Marseilles Observatory with the Eichens 26 cm. equatorial. Observations given for July 13 and 15.—Ernest Esclangon: Observations of the Kiess comet (1911b) made with the large equatorial of the Observatory of Bordeaux. Positions of the comet and comparison stars given for July 10 and 11. The comet appeared as a nearly round nebulosity of about 2′ diameter.—Observations of the Kiess comet (1911b) made at the Observatory of Besaneon with the 33 cm. bent equatorial. Positions given for July 10, 11, 12, and 13.—A. Petot: The extension to geodesic lines of a kinematic property of the right line.—Ruben Mallton: The construction of integral functions of irregular growth.—A. Korn: An important class of asymmetrical nuclei in the theory of integral equations.—H. Vergne: A theorem in hydrodynamics.—MM. Melchissedec and Fi-ossai-d: The mechanical theory of some tubes producing sound.—A. Leduc: Internal pressure in gases. Formulae of state and the law of molecular attraction.—M. Hani-jot and F. Raoult: The magnetisation coefficients of gold. A comparison of the magnetic properties of the brown gold (previously described by the authors) and ordinary gold into which the brown gold is converted by heating shows that they are distinct varieties of the same metal.—G. Chavanne: Isopyromucic acid. Its behaviour towards oxidising agents. Dibromomaieic and bromoxyinaleic di-aldehydes. Dibromomaleic aldehyde,
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Societies and Academies . Nature 87, 135–136 (1911). https://doi.org/10.1038/087135a0
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DOI: https://doi.org/10.1038/087135a0