Abstract
PARIS. Academy of Sciences, Sept. 22.—The president announced the death of Philippe Glangeaud, of the Section of Mineralogy.—H. Vincent: The comparative cryptotoxic power of the sodium salts of some of the saturated fatty acids. It has been shown in earlier publications that minute doses of sodium oleate, palmitate, or margarate can neutralise very active toxins (tetanus, diphtheria, dysentery), and that this is due to a physical action of the soaps. The antitoxic power of these soaps extends also to venoms, certain alkaloids, and metallic salts. The present communication gives an account of the antitoxic properties of the lower terms of the fatty acid series. The effects are very irregular and do not depend on the number of carbon atoms in the molecule, the solubility, or the melting point of the acid. There is no connexion between the cryptotoxic power and the surface tension of the solution.—Luc Picart: The singular cases in the calculation of orbits.—R. Chodat: New researches on the gonidia of lichens.—C. Raveau: The utilisation of streams at the mouth.—Jacques Chokhate: Continued algebraical fractions.—Paul Alexandroff: The geometrical analysis of the dimension of closed ensembles.—Georges Giraud: The integro-differential equations in conjunction with integro-differential conditions at the boundary.—Radu Badesco: A functional equation.—Pierre Dupin: The vibration of cylindrical tubes in water under the influence of alternating vortices.—D. Rosenthal and M. Mathieu: Mild steel welding in the electric arc. The strength of the weld is much increased if during the welding the metal is protected from oxidation. Examination by X-rays proves the existence of stresses in the case of the non-protected welds.—Constantin Salceanu: The magnetic double refraction of phenol, naphthalene, and of phenanthrene in the fused condition. The passage from the benzene ring to naphthalene and phenanthrene results in a large increase in the magnetic double refraction.—A. P. Rollet: A silver borate. The compound described was proved to have the composition Ag2B4O7 + 2H2O.—Andre Meyer and Mile. Suzanne Mathey: The volumetric estimation of acetone. The acetone is precipitated as 3HgSO4.5HgO.2C3H6O by Deniges reagent (acid mercury sulphate), the mercury in excess being titrated by Volhard's method.—L. Bert: A new method of synthesis of phenylpropargyl alcohol and its homologues substituted in the ring. With commercial cinnamyl alcohol as a starting point, a method giving good yields of phenylpropargyl alcohol is outlined.—H. Memery: The summer of 1930 and the solar variations.—W. Moycho: The formation of the pigment in Bacterium prodigiosum. The pigment (prodigiosine) always appears at the period of the strongest development: it is formed at the death of the bacterium and oxygen is necessary for its appearance.—G. Dinulescu: The biology of the horse-fly.—Edouard Ducloux and Mile. Georgette Cordier: Researches on the treatment of experimental bovine anaplasmosis in Tunis. This disease is curable, provided that the treatment is commenced sufficiently early.
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Societies and Academies. Nature 126, 709–710 (1930). https://doi.org/10.1038/126709b0
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DOI: https://doi.org/10.1038/126709b0