Abstract
PARIS. Academy of Sciences, Sept. 15.—Paul Helbronner: The observation of a polar aurora. Observed Sept. 3, between parallels 65° 10″and 64° 40′, on the occasion of the meeting of the International Congress of Geodesy and Geophysics at Stockholm.—V. Romanovsky: The discrete chains of Markoff.—J. Rey Pastor: A method of convergence by means.—L. Bert and M. Raynaud: A synthesis of propenyl benzene. The reaction between w-chlorallyl benzene and sodium gave unexpected results, propenyl benzene, C6H5.CH:CH.CH3, being the main product. The yield is sufficient to make this a good method of preparation of this hydrocarbon.—Jean Piveteau: The structural peculiarities of a new type of fossil fish from the Permo-Triassic formations of the north of Madagascar. This fossil has been previously described by Priem, and considered by him as belonging to the genus Pristisomus; the author does not agree with this view, and suggests the name of Australosomus as the name of a new genus.—J. Vellard and Jarbas Penteado: The action of ultra-violet rays on venoms. Experiments were made on venoms from Lachesis atrox, L. jararaca, Crotalus terriflcus, Naja tripudians, and Bufo marinus. An account of the changes in physical and chemical properties is given. The physiological action was found to be considerably reduced by exposure to ultra-violet light. With large doses of venoms irradiated for 45 minutes, the authors have been able to protect guinea-pigs and goats against the action of a subsequent injection of fatal doses of fresh venom.
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Societies and Academies. Nature 126, 670–671 (1930). https://doi.org/10.1038/126670a0
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DOI: https://doi.org/10.1038/126670a0