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PARIS. Academy of Sciences, August 17.—A. Lacroix: The crystalline schists containing dumortierite and.lazulite of Madagascar.—Charles Moureu, Charles Dufraisse, and Marius Badoche: Autoxidation and antioxygen action. The catalytic actions of various nitrogen compounds. Eighty-three nitrogen compounds of various types have been studied and from the results obtained certain general conclusions can be drawn. The amino group possesses marked antioxygen properties, but the amido group is only slightly active. The aminophenols are especially active, one part in 10,000 completely protecting acrolein from oxidation.—G. Póly a: Linear functional operations exchangeable with the derivation and on the zeros of the polynomials.—Silvio Minetti: The radius of convergence and the singularities of certain Taylor developments and the analytical functions which they define.—Carl A. Garabedian: A disc of constant or variable thickness in uniform or accelerated rotation.—N. Boneff: The arrival in the solar system of a foreign star. A theoretical study extending the conclusions given in a recent paper by Chazy.—A. Piccard and E. Stahel: Michelson's experiment, realised in a free balloon. Details of four experiments carried out at an altitude of 2500 metres and another series at an altitude of 4500 metres. The accuracy of the measurements was not sufficient to confirm or refute the experiments of Miller at Mount Wilson, but it can be said that if Miller's ether wind exists it does not increase with altitude.—A. Korczynski and B. Fandrich: The preparation of nitriles by the diazo reaction. Experiments to determine to what extent nickel chloride with potassium cyanide can replace cuprous cyanide in the preparation of nitriles. It was proved that the nickel reaction could be generalised and that the yields were better than when cuprous salts were used in the Sandmeyer reaction.—Jacques Bourcart: Preliminary observations on the tectonic of the Bouches de Cattaro.—V. Agafonoff: The podzolic process in the sandy soils of the Landes.—Gabriel Guilbert: The visibility of the atmosphere. There is no connexion between the presence of haze in the air and hygrometric state and various explanations put forward to explain the nature of haze are considered by the author as unsatisfactory.—E. Lacroix: The use of coccoliths by the arenaceous Foraminifera for building their shells.—G. and R. Moussu: Normal glycemia in cattle. Glycemia and vitular disease in cows in milk.
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Societies and Academies. Nature 118, 432 (1926). https://doi.org/10.1038/118432a0
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DOI: https://doi.org/10.1038/118432a0