Societies and Academies

Abstract

PARIS Academy of Sciences, April 1 (C.R., 200, 1161-1256). PAUL LANGEVIN: A suggested experiment of M. Dufour. This experiment was suggested as one capable of differentiating between classical kinematics and that of limited relativity. A mathematical analysis shows that, in the form laid down by M. Dufour, the experiment would fail to detect any difference. A modification is suggested by the author, which is theoretically capable of detecting the difference, but in practice it cannot be carried out. ERNEST ESCLANGON: Experimental researches on the optical dissymmetry of space. JULES HAAG: The algebraic structure of the admittances of a filter as a function of the frequency. FLORIN VASILESCO: The continuity of the potential through masses and the demonstration of a lemma of Kellogg. GHER-MANESCO: Exceptional homogeneous combinations of integral functions. ANDRE FORTIER: The kinematics of flow round profiles with hyper-sustaining arrangements. ADRIEN FOCH and CHARLES CHARTIER: The flow of a fluid below a sphere. PIERRE LEJAY and TSANG HUNG-Cm: Observations of the intensity of gravity at the centre of China. Table of results from sixty-five stations, showing the reduced values of g and the corresponding anomalies. LUCIEN BULL: A liquid string galvanometer. A modification of the string galvanometer, using a thread of water of 0 -3 mm. diameter. CH. LAVANCHY: General method of calculation for electrical networks. PIERRE GIRARD and PAUL ABADIE: The detection of molecular interactions by the relaxation time of polar molecules. ANDRE CHARRIOU and MLLE. S. VALETTE: The influence of the cations on photographic emulsions. MLLE. CECILE STORA: The action of gases (hydrogen, nitrogen, oxygen) on photo-cells with colouring matters. MLLE. YVETTE CAUCHOIS: Study of the L spectrum of mercury. C. G. BEDREAG: The place of protons and neutrons in the natural systematics of the elements. B. KURTCHATOV, J. KuRTCHATOv and G. LATYCHEV: The disintegration of boron by slow neutrons. The vapour of methyl borate was acted upon by slow neutrons and the effects followed by the Wilson method. The photographs show that the disintegration was accompanied by the emission of two heavy particles and not three as found by Chadwick and Goldhaber. B. KOURTCHATOW, I. KOURTCHATOW, L. MYSSOWSKY and L. ROUSSINOW: An example of artificial radioactivity, produced by bombardment with neutrons, without capture of the neutron. GEORGES WOLF: Study of the binary system strontium nitrate - strontium hydroxide. E. RINCK: Solidification diagrams of the alloys formed by two alkali metals; the potassium-rubidium alloys. FRANgois PUCHE: The thermal decomposition of the chloride and chlorosalts of palladium. MAURICE CHAIX: The ultra-violet absorption spectra of derivatives of diphenylene sulphide and diphenylene-sulphone. HENRI GUERIN: The reduction of the arsenates of the alkaline earths by carbon. Tri-calcium and tristrontium arsenates. GUY GIRE: The formation of basic sulphate and the precipitation of nickel in solution by magnesium. PIERRE CAERE and DAVID LIBERMANN: The reaction of thionyl chloride and phenylglycollie acid. M. TIFFENEAU and P. WEILL: The hydrobenzoin dehydration of phenylethenylglycol. The formation of oc-phenyl-crotonic aldehyde. VICTOR HARLAY: Some silver compounds of thiosemicarbazide and of the thiosemi-carbazones. FRANCOIS SALMON-LAGAGNEUR: Some reactions of the chloride of the oc-mononitrile of camphoric acid. ISSAC KOGA and MITSUO SHOYAMA: The frequency-temperature characteristics of quartz plates oscillating with zero temperature coefficient. J. FRANC DE FERRIERE: The history of the loess soils of the Rhenish terraces in Haute-Alsace. Louis and HENRI LONGCHAMBON: The extension of the Toarcian hydrocarbon facies in the east of France. CH. COMBIER: The constitution of the sand winds in Syria. ROBERT GIBRAT and GEORGES VIEL: The relation between the electrical conductivities of the air and the danger arising from lightning. R. GUIZONNIER: The amplitude of the semidiurnal component of the gradient of terrestrial electric potential and solar activity. MME. C. SOSA-BOUR-DOUIL: Physiological researches on the parents and hybrids of the bean, Vicia Faba. MAURICE MARIE JANOT: The action of folliculine and equilenine on the development of the hyacinth. JOSEPH and CHARLES BOUGET: Cultures of tubers obtained by the germination of seeds of potato raised in the mountains in 1933. ROBERT ECHEVIN: The absorbing power of soils towards magnesium chloride. Louis MAUME and JACQUES DULAC: The C/N ratio in the wheat plant at heading and flowering: its marked variations with the medium. JAMES BASSET, EUGENE WOLLMAN, MICHEL A. MACHEBCEUF and MICHEL BARDACH: The biological effects of ultra-pressures: the action of high pressures upon tumours. MLLE. HENRIETTE GARRAULT: The formation of rods of elastoidine in embryos of Salmonidse. P. LECOMTE DU NOUY and MLLE. VIVIANE HAMON: A new method of estimating the diphtheria antitoxin by the viscosity. RENE LEGROUX and ANDRE LWOFF: The schizogonic evolution of the macro-gametocyte of Hcemoproteus paddce. FREDERIC DIENERT: Study of the clarification of water by micro-organisms. PAUL GIROUD and HARRY PLOTZ: Crossed immunity between cultures of historic exanthematic typhus (murin) and the virus of passage.