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PARIS.
Academy ol Sciences, August 21.—M. Paul Appell in the chair.—A. Lacroix: Some volcanic rocks of the French possessions in the Indian Ocean and the Pacific.-Paul Appell: The developments of the square root of a polynomial in continued fractions.—W. H. Young: The convergence of Fourier's series.-M. Petrovitch: Theorem of the mean relating to the integrals of an important partial differential equation.— G. Giraud: Quadratic forms and hyperabelian functions.—A. Liljestrftm: A geometrical theorem useful for the study of the direct inversion of Abelian integrals. —R. Gamier; A new method for resolving Riemann's problem.—R. Birkeland: Developments of the movement of a fluid parallel to a fixed plane.—V. Kestitzin: The periodicity of the solar activity and the influence of the planets.—H.. Bordier: The action of light on dilute aqueous solutions of iodine and iodide of starch. Dilute solutions of these two substances, stable in the dark, are bleached by the action of light. The hypothesis put forward to explain this fact is based on the supposition that both iodine and iodide of starch do not form true solutions but colloidal solutions.-A. Blanchetiere: The relations between the chemical constitution of certain derivatives of amino-acids and the mode of attack of these substances by bacteria.-Ch. Dhere and G. Vegezzi: The influence exercised by the degree of reduction of the hsemochromogens on their spectra.
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Societies and Academies . Nature 98, 23–24 (1916). https://doi.org/10.1038/098023b0
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DOI: https://doi.org/10.1038/098023b0