Abstract
PARIS. Academy of Sciences, September 12.—M. Bouchard in the chair.—J. Guillaume and J. Merlin: Occultation of η Geminorum by Venus, July 26, 1910, observed at Lyons. As the planet was only 9° above the horizon, the images observed were unsteady. The data are given in full, and calculations made of the diameter of Venus.—Carl Störmer: Theorems on the general equations of motion of a corpuscle in a magnetic and electric field superposed. —Paul Floquet: A comparison of the different methods of measuring the dielectric constant. Paraffin extracted from ozokerite has been shown by M. Malclès to possess no residual charge and to be without any appreciable conductivity. This paraffin has been utilised for comparing at the same instant the values of the dielectric constant obtained by two different static methods. The results agreed within i per cent., and a similar concordance was obtained for measurements based on the relative velocities in air and in paraffin of Hertzian waves.—Philippe de Vilmorin: Researches on Mendelian heredity.— J. Athanasin and J. Dragpoin: The association of elastic and contractile elements in muscle.—E. Roubaud: The evolution of instinct in Vespides. Remarks on the social wasps of Africa, genus Belonogaster.—Joseph Roussel: The existence of three horizons of calcium phosphate in Algeria and Tunis.
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Societies and Academies . Nature 84, 390 (1910). https://doi.org/10.1038/084390a0
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DOI: https://doi.org/10.1038/084390a0