Abstract
PAIRS. Academy of Sciences, October 26.—M. Bouchard in the chair.—E. L. Bouvier: The phenomena which characterise the change of nest in the ant Messor barbarus. A detailed account of the curious habits of these ants when exchanging nests.—M. Gouy: The constitution of the electric charge at the surface of an electrolyte.—Armand Gautier: Remarks on the second International Congress for the Repression of Fraud in Food and Drugs, held at Paris, October 18 to 23.—J. Guillaume: Observations of the sun made at the Observatory of Lyons during the second quarter of 1909. Observations were possible on sixty-three days, the results being summarised in three tables showing the number of spots, their distribution in latitude, and the distribution of the faculæ in latitude.—Charles Nordmann: The temperature of β Perseus (Algol). Taking 6000° as the temperature of the sun, the application of Planck's law leads to 22,900° as the temperature of Algol. This is nearly identical with the temperature (23,800°) found previously by a totally independent method.—M. Javelle: Halley's comet. Observations of the comet made with the large equatorial at Nice. On October 12 it appeared as a small round nebulosity, 10″ to 15″ in diameter, with a central nucleus of the fourteenth to fifteenth magnitude.—R. Jarry-Deeloges: Observations on the surface of the planet Mars. Two diagrams accompany this paper, showing the details perceived during July, August, and September, 1909.—G. Athanasiadis: The influence of temperature on the phenomena of polarisation in the electrolytic valve. The potential difference, producing a definite current in the electrolytic valve, diminishes as the temperature increases.—L. Gay: The vapour pressure of mixed liquids. A new demonstration and generalisation of the formula of. Duhem-Margules.—G. Belloc: The emission of gases by heated metals. A definite volume of gas can be extracted by heating a metal such as steel to a definite temperature in a vacuum; If the metal is allowed to cool, the vacuum being maintained, a re-heating to the same temperature after an interval of some days gives rise to a fresh amount of gas, and this process can be continued; even after seven heatings small amounts of gas continue to be evolved.—Maurice Coate: The transformations of selenium. Exact measurements of the density of selenium submitted to various treatments have been made.—E. Cornec: Cryoscopic study of the neutralisation of some acids.—Maurice Barrée: The points of transformation of the copper-aluminium alloys as determined by a study of the variation of electrical resistance with temperature.—Georges Darzens and M. Rost: Hexahydrophenylacetylene and hexahydrophenylpropiolic acid. Starting this hexahydroacetophenone, C6H5.CO.CH3, this was converted into C6H11.CCl: CH2 by the action of phosphorus pentachloride, and from this hexahydrophenylacetylene is obtained by the action of potash. The sodium derivative of this, with carbon dioxide, gave sodium hexahydrophenylpropiolate, some derivatives of which are described.—H. Arsandaux: Contribution to the study of the laterites.—Marin Molliard: Can the amines serve as food for the higher plants? Contrary to the results of Ville and of Lutz, the author's experiments lead to the conclusion that none of the amines can act as food substances for the higher plants.—I. Borcea: The origin of the heart, the vascular migratory cells, and the pigmentary cells in the Teleostea.—A. Imbert: The fatigue produced by rapid movements.—C. Fleig: The action of radio-active mineral waters and of artificial serums on the survival of organs or isolated cellular elements of the body.—Maurice de Rothschild and Henri Neuville: Remarks on the okapi.—A. Monvoisin: The acidity of the milk of tuberculous cows. The low acidity of tuberculous milks depends principally upon the diminution in the amount of casein present.—Alfred Angot: The earthquake of October 20–21, 1909. The seismograph records at the Pare Saint-Maur Observatory indicate that this earthquake, no mention of which occurs in the newspapers, must have been very violent. Its epicentre was probably in the Himalayas or neighbouring mountainous regions.—E. A. Martel: The subterranean river of Labouiche or La Grange (Ariège).—V. Crémieu: A new determination of the Newtonian constant. The torsion-balance method, described in a previous paper by the author, gives a value of K = 6.674 × 10-8, the accuracy estimated being of the order of 1 in 10,000.—H. Hildebrand Hildebrandsson: Some remarks on the temperatures of summer in various parts of Europe.
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Societies and Academies . Nature 82, 29–30 (1909). https://doi.org/10.1038/082029b0
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DOI: https://doi.org/10.1038/082029b0