Abstract
PARIS. Academy of Sciences, August 9.—M. Bouquet de la Grye in the chair.—The thermal effects of moistening soils: A. Miintz and H. Gaudechon. Certain dry soils, when moistened, give out an appreciable amount of heat, and it is possible that this thermal phenomenon may have an effect on the growth of plants. Measurements with different soils gave an evolution of heat varying from 0-9 to 6-6 calories per kilogram, and a systematic levigation showed that the finest particles caused nearly all the heat evolution.—Magneto-anodic phenomena: M. Gouy. The phenomenon described accords to a certain extent with the theory of M. Fortin, which regards the magneto-kathode rays as formed of spirals of electrons.—Discontinuous singularities of uniform analytical functions: A. Denjoy.—Tides and the crust and the elasticity of the terrestrial globe: Ch. Lallemand. The author has shown in a previous note that the principal modes of determination of the rigidity of the globe lead to different results. The theory developed in the present paper removes this anomaly.—The different species of asymmetrical intensities, observed for the magnetic components, polarised circularly, of the absorption bands of uniaxial crystals: Jean Becquerel.—The decomposition of carbon dioxide by the ultra-violet rays: H. Hercheflnkel. The decomposition of carbon dioxide into oxygen and carbon monoxide by the action of the ultra-violet rays has been proved; a similar result has been obtained with the radium emanation, confirming the observations of Ramsay and Cameron.—The inter vention of osmotic pressure in dyeing: M. Bosenstiehl.—A method for the rapid estimation of metallic aluminium: E. Kohn-Abrest. The metal is heated to 300° C. first in hydrogen, and then in pure hydrochloric acid gas, followed again by hydrogen. The aluminium is volatilised as chloride, and the metal determined indirectly by a deter mination of the chlorine.—Attempts at benzidination_ in the diphenyl, diphenylamine, and diphenylethane series: H. Duval The ethyl acetal of tetrolic aldehyde: P. L. Vieuer. Dibromo butyric aldehyde was obtained by the addition of bromine to crotonaldehyde; the application of Claisen's method to this aldehyde gave, not the tetrolic aldehyde desired, but its ethyl acetal.—Some parasitic diseases of Cinnamomum zeylanicum of Ceylon: D. Boia and C. Gerber.—Vaccination of cattle against tuberculosis: M. Rappin. The bacilli used in these injections were modified by the action of sodium fluoride; it has been shown that the resistance of the animal to tuberculous infection is increased by the treatment almost to the point of immunisation.—The glucoses of the urine: F. Landolph. Each species of glucosuria or diabetes corre sponds, in the urine, to the presence of mixtures of several kinds of sugars, and it may be supposed that these differences correspond to diseases of different organs.—The preservation and increase of digestibility of distillery pulps and of green ensilage by a rational fermentation by inocula tion: J. Crolbois.—The suprarenal capsules and their exchanges between the blood and tissues: J. Athanasiu and A. Gradinesco. The experiments on a dog and a cat described lead to the conclusion that the death of animals deprived of the suprarenal capsules is due to the arrest of the exchanges between the blood and the tissues.—Contribution to the study of urinary indosis in diabetic subjects: H. Labbe and G. Vitry.—The variation of an oxidising enzyme during metamorphosis in Limnophilus flavicornis: Xavier Roques.
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Societies and Academies . Nature 81, 239–240 (1909). https://doi.org/10.1038/081239b0
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DOI: https://doi.org/10.1038/081239b0