Abstract
Academy of Sciences Aug. 1.—A. Lacroix: The composition and structure of the meteoric iron of Tamentit. The oxidation of meteonic iron at a high temperature. Analyses gave iron 91 per cent., nickel 8 per cent., cobalt 0.38 percent., with some manganese, phosphorus, sulphur, carbon, and silicon. The meteorite weighed 510 kilograms, and a piece was cut off by means of the oxyacetylene blowpipe. Analyses of the magnetic oxide produced showed it to be free from nickel, and the metal fragments taken from the scoria showed a concentration of the nickel. The bearing of this on the composition of meteorites containing silicates is discussed.—F. E. Fournier: The resistance of water to the translation of hulls.—Gabriel Bertrand and Hirosi Nakamura: The physiological importance of nickel and cobalt. In an earlier communication (Bertrand and Machebceuf) it has been shown that traces of, nickel and cobalt are normal constituents of man and of animals. Experiments on mice suggest that these two metals have a direct action in nutrition.—d'Arsonval: The heating of the tissues by high frequency currents. The thermal ammeter is generally employed to measure the strength of the currents used; but it is not a trustworthy guide when used as a measure of the heating of the tissue under treatment.—Léon Guillet, de Fleury, and Sensaud de Lavaud: The aluminium-silicon alloy known as ‘alpax’: its applications. Mechanical properties of the alloy cast at 575° and 775° C., after addition of sodium. It can be used in the construction of motor - car chassis.—G. Friedel: Forms assumed by myeline in contact with water.—Amé Pictet and H. Vogel: The synthesis of lactose. Equal weights' of β-galactose and β-glucose, with a little zinc chloride, are heated under reduced pressure to 175° C. That lactose was obtained was proved by its melting point, solubility, and rotation. The osazone, nitrate, and acetate were prepared.—Charles Nicolle, Charles Anderson, and Jacques Colas-Belcour: A new pathogenic spirochsete (Sp. Normandi) transmitted by an Ornithodorus (Orn. Normandi).—Krawtchouk: The poles of analytical functions.—C. Irañez de Irero: A submarine link between Spain and Morocco, by means of an intercontinental tunnel. A tunnel across the narrowest part of the Straits would be impossible, as there are depths of more than 900 metres. A possible line is sketched out which would have a length of 48.2 kilometres, of which 32 kilometres would be under the sea.—F. Gonseth and G. Juvet: The equations of electromagnetism.—James Basset: An apparatus for carrying out physical or chemical experiments at varying temperatures and under pressures of 15,000 kilograms per square centimetre. The description is accompanied with photograph and sectional drawing of the apparatus.—B. Cabrera: The theory of paraniagnetism.—Armand de Gramont: Monostatic telemetry during twilight.—R. de Mallemann and P. Gabiano: The circular dichroism of the alkaline cuprotartrates.—Lucien Mallet: The luminescence phenomena in the course of oxidising reactions in acnieous solutions. During the oxidation with alkaline hypochlorite of various organic substances (albumen, methylene blue, eosin, quinine, etc.) light is produced. The intensity is increased when the temperature is raised.—Eugène Delauney: A new method of quantitative analysis applicable to a mixture of rare earths. The method is based on the measurement of the thickness of an absorption band, as- shown in a small Hilger spectrograph. Various examples of the use of the method are given.—W. I patieff and J. Andrewski: The precipitation of iridium and its solutions by hydrogen under pressure. At temperatures of .100° and 103° C. the proportion of iridium reduced by hydrogen has been studied for pressures between 1 and 10 atmospheres. The reduction increases with the dilution, with the pressure of the hydrogen and with the time of exposure. The general results are very similar to those previously obtained with platinum.—Dedebant: The field of instantaneous displacement of isobars.—Mile. M. Gauthier: The French larvae of Ephemerids referred to the genus Iron.—F. Mercier and Raymond-Harriet: The vaso-constrictive action of hydrastine.—Mme. L. Random and Mile A. Michaux: The variations in the proportions of iron in the liver, the spleen, and the blood, under the influence of feeding in the complete absence of the antiscorbutic vitamin.—Raoul M. May: Microchemical studies on the nervous system. The proportion of sulphur and phosphorus in the cerebral hemispheres of the guinea-pig.—Charles Lebailly: The preventive and specific vaccination of dogs against distemper.
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C., W. Societies and Academies. Nature 120, 389–391 (1927). https://doi.org/10.1038/120389a0
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DOI: https://doi.org/10.1038/120389a0