Abstract
PARIS Academy of Sciences, June 26 (C.R., 196, pp. 1933-2062). DARSONVAL: A generator of electrical impulses working at three million volts. Description of an apparatus installed at Ivry in the Ampere Laboratory giving with 3,000,000 volts a 4-metre spark. L. BLARINGHEM: The habitus, or biological individuality of the hybrids of Hemerocallis (H. flava and H.fulva). E. L. BOUVIER: The heterocere moths of the Lonomiicae tribe, terminal group of the family of the Hemileucidae. ALBERT EINSTEIN was elected a foreign associate in the place of the late A. Michel-son. EDGAR BATICLE: The problem of distribution. V. FOCK and N. MUSCHELISVTLI: The equivalence of two methods of reduction of the biharmonic plane problem to an integral equation. JULIUS WOLFF: The integral of a holomorph function with real positive part. RAPHAEL SALEM: A property of certain Fourier series. ALEXANDRE GHIKA: The prolongation of uniform monogenous functions. JEAN LOUIS DESTOUCHES: Two peculiarities of mechanics in space of wave functions (Îè); (1) Hamiltons principle in point mechanics (Îè); (2) the bases of the method of hyperquantification. ALEXANDRE FAVRE: Hydrodynamic movement in a flat tunnel. The measurement of velocities, periodicities. EDMUND BRUN: The heating of cylindrical bodies in rapid displacement in air. The measurement of the coefficient of thermal exchange between these bodies and the air. A. LAFAY: An effect attributable to turbulence. P. LEJAY and G. COSTES: The use of the gravimeter at a great distance from stations of reference. Application to the establishment of gravity bases in Indo-China. R. GOUDEY: Measurements of gravity made with the Holweck-Lejay apparatus, No. 2. ROBERT ESNAULT-PELTERIE: The application of dimensional analysis to the study of turbulent flow. W. SWIETOSLAWSKI, A. ZMACZYN-SKI, I. ZLOTOWSKI, J. USAKIEWICZ and J. SALCE-WICZ: An ice calorimeter for measuring very small thermal effects. The apparatus illustrated and described will detect a thermal effect of 3 x 105 to 1 x 105 cal. per gm. per hour. It is specially designed for the measurement of minute thermal effects produced by continuous phenomena. MLLE. M. CHENOT: The high frequency discharge. W. J. DE HAAS, E. C. WIERSMA and H. A. KRAMERS: A method of obtaining an extremely low temperature by the adiabatic demagnetisation of a salt of a rare earth. A tube containing cerium fluoride (CeF3), placed in a magnetic field of 30 kilogauss, was cooled in a bath of liquid helium to 1 -26° K. By the sudden reduction of the magnetic field to 2-5 kilogauss the temperature was reduced to 0-2° K. A. COTTON: Remarks on the preceding communication. The author points out that the theory of paramagnetism published by Langevin in 1905 predicted changes of temperature accompanying magnetisation or demagnetisation of paramagnetic substances. A. DARSONVAL: Remarks on the same subject. ST. PROCOPIU: The magnetisation of iron by the superposition of an alternating field on a constant magnetic field. D. CHALONGE and E. VASSY: Comparison between the blue and violet spectra of the molecule of hydrogen. MICHEL MAGAT: Two new Raman bands of water. PAUL MARECHAL: Comparison of the transparence band of metallic silver and of colloidal silver. By quantitative photographic photo metry it is shown that two different preparations of colloidal silver and metallic silver deposited on quartz by cathode projection give the same absorption for light of various wave-lengths. R. SIKSNA: Two new resonance series in the vapour of antimony. G. REBOUL: The emission of a very soft radiation by electrified insulators. G. DECHENE: The study in a vacuum spectrograph of the radiation of semiconducting cells. PAUL SOLEILLET: Photometry of the fluorescence of a jet of cadmium atoms. The mean duration of life of the state 23P1. MLLE. R. MACAIGNE: Study of the absorption of the -rays by a photographic method. The photographic plate and the ionisation chamber both show the total effect of the radiation studied. PIERRE GIRARD and P. ABADIE: The structure of the molecules of the polyalcohols, as shown by their dispersion and absorption in the Hertzian range. Molecular associations. VICTOR LOMBARD and CHARLES EICHNER: The diffusion of hydrogen through palladium. The influence of pressure, temperature and the state of purity of the metal. A. PORTEVIN, P. BASTIEN and M. BONNOT: Remarks on the study of the corrosion of metals and the corrosion of various magnesium alloys. E. HERZOG and G. CHAUDRON: Resistance of certain aluminium-magnesium alloys to corrosion by sea water. PICON: The zirconium sulphides. The preparation and properties of three zirconium sulphides are described, of composition Zr3S5, Zr2S3, and ZrS2. L. DEBUCQUET and L. VELLUZ: The microdetermination of magnesium as the triple ferrocyanide of magnesium, calcium and hexame-thylenetetramine. Quantities of magnesium of the order of 0. 1 mgm. can be determined by this method with an error of less than 5 per cent. F. EVARD: The organic molecular combinations of titanium tetrachloride. R. E. BREUIL: Complex compounds of ethylenediamine with the ferrous halides. MARCEL GODCHOT, MAX MOUSSERON and ROBERT GRANGER: The preparation of aminocyclooctanols and their resolution into active compounds. MARCU ROTBART: Some new ether oxide acetals and aldehydes. HENRI BRASSEUR: The structure of the crystallised platino-cyanides. FRANCIS RUELLAN: Two ancient marine levels in the region of Perros-Guirec (Cotes-du-Nord). Louis EMBERGER: The botanical exploration of the Sagho (Morocco). W. A. BECKER: The application of vital coloration to the study of cyto-diseresis. L. MAUME and A. BOUAT: Zones of stability as a function of the pH of various copper compounds of a Burgundy mixture. EMILE SAIL-LARD and R. SAUNIER: The determination of the ash of molasses by the electrical conductivity. P. VIGNON: The base of the wing in insects. Pseudo-costal and transverse formations. J. LEFEVRE and A. AUGUET: The thermo-regulation of work. Relation of its curves with those of rest. RAOUL LECOQ: The evolution of total B avitaminosis in the pigeon in its relations with the digestibility and nature of proteids in its food. N. BEZSSONOFF and A. DELIRE: The colour reactions of vitamin C. A discussion as to how far the decolorisation of dichlorphenolindo-phenol can be regarded as a specific reaction for vitamin C. G. DEL AM ARE: The primary sinusoids with equal loops of the body of the Spirochetides. R. TURPIN and A. CARATZALI: Conclusions from a genetic study of the folded tongue.
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Societies and Academies. Nature 132, 254–256 (1933). https://doi.org/10.1038/132254a0
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DOI: https://doi.org/10.1038/132254a0