Abstract
PARIS.
Academy of Sciences, October 3.—M. Duchartre in the chair.—On the variations of composition of Jerusalem artichokes from the point of view of mineral matters, by M. C. Lechartier. The author gives the results of some investigations made at the Rennes Agricultural Station, on the culture of artichokes in soils differently treated. He has also studied atmospheric influences as indicated by cultures on similar plots for three consecutive years.—Observations of Wolf's comet made with the great telescope of Toulouse Observatory, by M. E. Cosserat. Observations for position were made and are recorded, extending from August 13 to September 28.—On the value of electrostatic tension in a dielectric, by M. L. de la Rive.—On the simultaneous existence, in cultures of Staphylocoque pyogène, of a vaccine substance capable of being precipitated by alcohol, and of a substance soluble in alcohol, by MM. A. Rodet and J. Courmont.—On some parasite Copepods, by M. Eugène Canu.—Observations of the fall of a solar prominence into a spot, by M. E. L. Trouvelot. The observations relate to some remarkable luminous filaments occurring in a group of spots from August 6 to August 10.
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Societies and Academies. Nature 44, 584 (1891). https://doi.org/10.1038/044584b0
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DOI: https://doi.org/10.1038/044584b0