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PARIS Academy of Sciences, Oct. 20.—M. de Quatrefages, president, in the chair.—The following papers were read:—Theory of the movement of a point attracted towards a fixed centre, by M. J. Bertrand.—On Dr. Reye's explanation of the solar sports, by M. Faye. Dr. Reye considers that the heat of a facula causes an up-rush and expansion of the superincumbent atmosphere, causing a sort of vortex through which the materials of lower strata rise, expand, cool down, and condense. M. Faye, after explaining the theory in question, argued that a very simple fact overthrows it at once. Dr. Reyese's theory would make the vortex or spot on the sun, while the measurements of Carringion have shown that it is really in the sun.—Anatomical researches on the tardigrade .Edentata, by M. P. Gervais.—M. Alph. de Candolle presented the last volume of the “Prodromus Systematis Naturalis Regni Vegetabilis.”—The secretary reported on number of papers on the Phylloxera.—Researches on an easy method of measuring the capacity of ships, by M. d'Avout.—Additional note to the monograph on the fish of the family of the Symbranchidœ, by M. C. Dareste.—On the production of galls on vines attacked by the Phylloxera, by M. Max Cornu.—On the reproduction of the oak Phylloxera, by M. Balbiani.—On the production of certain crystalline borates in the dry way, by M. A. Ditte. The paper in question described several borates of barium and magnesium, and also several double salts of the same class.—Note on the chlorovanadates, by M. P. Hautefeuille.—On the production of methylamines in the manufacture of pyroligneous products.
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Societies and Academies . Nature 8, 562 (1873). https://doi.org/10.1038/008562a0
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DOI: https://doi.org/10.1038/008562a0