Abstract
PARIS Academy of Sciences, October 29.—M. Blanchard, president, in the chair.—Allusion was made by the President to the loss sustained by the Academy in the person of M. Louis Breguet, the mechanician, who died suddenly on the night of October 26.—Observations on the geometrical deformations produced by pressure on a rectangular parallelopipedon with prolongation in a single direction (two illustrations), by M. Tresca.—Fossil and savage man; anthropological studies, by M. de Quatrefages. In presenting this important work to the Academy, the author remarked that since the discoveries of Boucher de Perthes and the jawbone of Moulin-Quignon some twenty years ago, not only has the existence of Quaternary man been universally recognised, but a certain number of distinct Quaternary races has already been determined. The existence of Tertiary man also, without being yet fully demonstrated, has been rendered highly probable, especially by the researches of M. Capellini. A detailed account is given of all the known Quaternary races of Western Europe, based mainly on the fossil remains collected by M. de Baye in the artificial caves explored by him in the department of La Marne.—Note on the freezing point of alcoholic solutions, by M. F. M. Raoult. In accordance with the general law established by the author, the soluble bases are shown to belong to two distinct groups, one presenting a molecular lowering of the freezing point comprised between 33° and 48°, with a mean of 39°; the other lying between 16° and 20°, with a mean of 19°.—Report on the results of the treatment of the vines attacked by phylloxera in the Maritime Alps, by M. Laugier. The report speaks favourably of the experiments made during the years 1881–83 with sulphuret of carbon and sulphocarbonate of potassium.—On certain equations connected with surfaces of constant curvature, by M. G. Darboux.—Determination of the equivalent of nickel by means of its sulphate, by M. H. Daubigny.—On a process for detecting by chemical analysis the traces of blood in clothes that have been washed, by M. C. Husson.—A comparative study of the excitability of the surface and deeper parts of the brain, by M, Couty.—On the spermatogenesis of podophthalmous crustaceans, and especially of the decapods, by M. G. Herrmann.—Note on the anatomy and physiology of the Sacculine and the allied genera Peltogaster and Lernæodiscus, by M. Yves Delage.
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Societies and Academies . Nature 29, 48 (1883). https://doi.org/10.1038/029048a0
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DOI: https://doi.org/10.1038/029048a0