Abstract
PARIS Academy of Sciences, Sept. 8.—M. Bertrand in the chair.—The following papers were read:—Fifth note on Guano, by M. Chevreul.—Note on the observations of M. Lecoq de Boisbaudran, relative to the appearance of Phylloxera in the vine-yards of the Charente, by M. Milne-Edwards.—Note on the number of points of intersection which represent a multiple point common to two plane curves, &c., by M. de la Gournerie.—Researches on Crystalline Dissociation, continuation by MM. P. A. Favre and C. A. Valson. This portion of the paper dealt with the valuation and division of the work done in saline solutions.—Note on a New Systems of representing the continuous Meteorological Observations, made at the National Observatory, Algiers, by M. Bulard.—Note on Magnetism, third part, by M. J. M. Gaugain.—On the Spontaneous Motion of Ascension of Liquids in Capillary Tubes, by C. Decharme. This portion of the paper treated of the subject from a theoretical point of view.—On Pyrogallol in the presence of iron salts, by M. E. Jacquemin.—Researches on the Spectra of Chlorophyll, by M. J. Chautard. The author has found that this substance so easily changed as viewed from the physiological point of view, is very stable when subjected to chemical reagents.—On the state of the Volcano of Nisiros, in March, 1873, by M. H. Gorceix.—M. de Laval sent a note stating that he was the original proposer of the use of the carbonic disulphide against the Phylloxera.—The ephemerides of Brorsen's Comet were received from Mr. Plummer, and a note on the same comet, and on that of Faye, from M. Stephan.—New observations on the presence of Magnesium on the Solar Limb, and an answer to certain points in M. Faye's theory, by Father Tacchini. The author stated in his letter that the fact of the line 1474 K always appearing with b, end even without it, induces him to think that the former is not due to iron which is much heavier than magnesium.—On the use cf Chronometers at sea, by M. Magnac.—Reflections on Spontaneous generation, in relation to a note by M. Gayon, on the spontaneous changes of eggs, and a note of Mr. Grace Calvert on the power of preventing the development of Protoplasmic life, by M. A. Béchamp.
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Societies and Academies . Nature 8, 405 (1873). https://doi.org/10.1038/008405a0
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DOI: https://doi.org/10.1038/008405a0