Abstract
PARIS Academy of Sciences, November 5 (CM., 199, 897–988).—JEAN TILHO: Two sketches concerning the final capture of the Lagone and its consequences for the Tchad basin. Sketch maps illustrating the author's previous communication on the same subject, and further remarks on the serious consequences which would result in the Tchad area. MABIN MOLLIABD: Heather and mycorrhiza. Results on the culture of Calluna vulgaris under aseptic conditions: the views of Rayner as to the necessity of the presence of a mould for normal growth are not confirmed. CHARLES ACHABD, AUGUSTIN BouTABic and JEAN BOTJCHABD:—The action of sera on the fluorescent power of solutions of uranine. The fluorescent power of uranine solutions is unaffected by the addition of normal sera (horse, man), and this is also the case with sera from subjects suffering from various diseases. The blood of cancerous patients, however, causes a marked reduction of fluorescence. JULES HAAG: Self-maintained oscillations. J. CABANNES:—Theoretical considerations on the luminescence of the upper layers of the atmosphere. The luminosity of the night sky is regarded as a phosphorescence phenomenon in a gaseous mixture of metastable nitrogen, ozone, oxygen and water vapour. HENBI DEVATJX and JEAN CAYBEL:—The influence of temperature on the elec trical conductivity of cupric sulphide in thin layers. The considerable changes in the conductivity of thin layers of cupric sulphide produced by a rise of temperature are attributed to loss of water. LUCIEN DANIEL: Deficient seeds in the grafted Jerusalem artichoke. E. J. GUMBEL: The paradox of the limit age. DAVID WOLKOWITSCH: A generalisation of a theorem of Monge. ALFRED ROSENBLATT: The application of Picard's method of successive approx imations to the study of equations of the second order, elliptical and non-linear, with three independent variables. COBNELIS VISSEB: The angular derivative of univalent functions. HENBI CABTAN: Pseudo-conformal transformations of the topological product of two domains. TCHANG TE-Lou: A new method for the study of detonation in the motor. It is not sufficient to measure the maximum pressure produced by the detonation: the variation of dp/dt with the time is a better measure of the shock. An apparatus is described which records the curve dp/dt as a function of time. Reproductions of four of these curves are given, showing the effect of advancing the spark. DANIEL BABBIEB: The reality of the correlation observed between the eccentricities and periods of double stars. A discussion of the views of C. K. Seyfert. From a discussion of additional data, the author can neither confirm nor deny the conclusion of the reality of this relation. RAYMOND LATJTIE: The density and molecular constitution of a normal pure liquid. WOJCSECH SWIETOSLAWSKI and JOSEPH SALCEWICZ: The application of Newton's laws of cooling to the measurement of very small thermal effects. The method described has been applied to the determination of the heat produced by a specimen of pitchblende. The temperature change was of the order of 0-0034° per hour. EMILE SEVIN: Waves, spin and numbers. J. SAVARD: The ionisation potentials and energies of formation of some halogen molecules. JEAN SAVORNIN: The influence of the reflective power and sharpness of the edge of a screen on distant refraction. MLLE. C. CHAMIE: The supplementary radiations in the recoil of the active deposit of thorium. JTJLES GUERON: The Raman spectrum, constitution and evolution of solutions of stannic chloride. MLLE. MARIE LOUISE DELWAULLE: The system bismuth iodide, potassium iodide, water. PIERRE LOCUTY and PAUL LAFFITTE: The system sulphuric acid, ammonium sulphate, water. PICON: The preparation and properties of ammonium, calcium and quinine aurothiosulphates. A. PERRET and R. PERROT: The reactional aptitude of sodium amide. Study of the reactions of sodium amide with cyanogen, phosgene and sulphuryl chloride. CHARLES DUFRAISSE and MAURICE LOURY: Researches on the dissociable organic oxides. 1, 1-Di-phenyl-3, 3-dicarbethoxyrubene. Its dissociable oxide. GEORGES DARZENS and ANDRE LEVY: The fluorine derivatives of butyltoluene and of butyl-m-xylene. New fluoro-nitro derivatives smelling of musk. JACQUES FROMAGET: the Trias in the north-west part of the syncline of Sam Neua (Tonkin and Laos). P. ROUGERIE: The harmonic analysis of the diurnal variation of the north-south earth currents recorded at the Pare Saint-Maur Observa tory. GEORGES DEFLANDRE: Microfossils of plankton origin, preserved in the state of organic matter in flints from the chalk. H. COLIN: The starch of the Florideae. This has properties intermediate between those of true starch and glycogen. PIERRE LESAGE: The heredity of acquired precocity in Lepidium sativum. MLLE. JEANNE LEVY: Experimental alcoholism. The mechanism of growing used to alcohol. From experiments on the rat it is concluded that there is no acceleration in the oxidation of the alcohol: the effect is due to a reduction in the sensibility of the cells of the brain. ANTOINE MAGNAN: Contribution to the study of flight in birds. MARC DE LARAM-BERGUE: Self-fertilisation and cross-fertilisation in Bullinus contortus. P. CHEVEY: The vertical dis tribution of the ichthyological fauna near the eastern coasts of French Indo-China. JACQUES POCHON: The role of a cellulolytic bacterium of the stomach, in the transformation of cellulose into glucose, in the interior of the digestive tube of ruminants. It is proved that Plectridium cellulolyticum is an im portant factor in the process of digestion of cellulose in ruminants. GASTON RAMON: Experimental anti-diphtheric immunisation by means of living diph theria bacilli.
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Societies and Academies. Nature 134, 946–948 (1934). https://doi.org/10.1038/134946a0
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DOI: https://doi.org/10.1038/134946a0