Abstract
PARIS. Academy of Sciences, October 2.—M. Armand Gamier in the chair.—The president announced the loss, by death, of Auguste Michel-Lévy and Joseph Louis Troost.—Emile Picard: Continuous solutions of integral equations of the third species.—Paul Appell: Functions of the fourth degree.—MM. Esclangon and Courty: Observations of the Quénisset comet and of the Brooks comet made with the large equatorial (38 cm.) of Bordeaux Observatory. Dates are given for September 26, 27, and 28. The Quénisset comet appeared as a circular nebulosity of 4′ to 5′ diameter, with a clear nucleus. The tail of the Brooks comet has been visible to the naked eye since September 17.—M. Borrelly: Observations of the Quenisset comet (1911f) made at the Marseilles Observa tory with the comet finder. Positions of the comet are given for September 27 and 28. It appeared to be nearly circular, about 2′ diameter, with glimpses of a small nucleus of about the twelfth magnitude.—F. Baldet and F. Quénisset: Observation of the gegenschein. Atten tion is directed to the remarkable intensity now exhibited by the gegenschein, or zodiacal counterglow; it is pointed out that there is no satisfactory explanation for this phenomenon.—M. Giacobini: Observations of the Quenisset (1911f) and Beljawsky (1911g) comets made at the Observatory of Paris with the eastern tower equatorial of 40 cm. aperture. Positions are given for September 25, 27, and 30 for the Quénisset comet, which appears as a nebulosity of sensibly elliptical shape 45″ to 50″ in extent. The nucleus is well defined, and is of the eighth magnitude. The positions of the Beljawsky comet are given for September 30 and October 1. This comet is exceptionally bright, and has a nucleus of the third magnitude. The tail is about 15° long.—D. Pompéiu: The functions of complex variables.—Et. Delassus:Non-linear linkages.— G. Reboul and E. Grégoire de Bollemont: The transport of metallic particles under the action of heat. Sheets of copper or silver, near which is placed a sheet of porcelain or another metal, give deposits on the latter when heated. The amount of metal deposited is shown to depend to some extent upon the nature of the gas between the two plates.—Auguste Marie and L. MacAuliffe:The asym metry of the Neanderthal, Cro-Magnon, and Spy No. i skulls. The application of the method proposed by M. Chervin to casts from these three skulls shows that all are asymmetrical. Three diagrams are given showing the deviations observed.—Paul Marchal and J. Feytaud: A parasite of the eggs of Cochylis and Eudemis.—E. Roubaud: New contribution to the biological study of Glossina. Some data on the biology of G. morsitans and G. tachinoides from the Nigerian Sudan.—L. Boutan: Some peculiarities relating to the mode of fixing of the crustacean Gnathia halidaii. NEW SOUTH WALES.
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Societies and Academies . Nature 87, 507–508 (1911). https://doi.org/10.1038/087507a0
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DOI: https://doi.org/10.1038/087507a0