Abstract
Academy of Sciences, August 24.—M. P. Appell in the chair.—B. Baillaud: Observations of the eclipse of the sun of August 21 made at the observatories of Algiers and Paris. At Algiers the eclipse was observed under good conditions. Thirty photographs were obtained, times of contact measured, and the ionisation studied. At Paris measurements were made of times of contact and four negatives were taken, but clouds interfered with the observations.—H. Deslandres and A. Perot: A second seris of attempts to obtain a maximum magnetic field. The use of water with a new mode of cooling. The authors have aimed at the use of intense currents and large quantities of electrical energy rather than applying enormous masses of iron. The essential difficulty is the cooling of the bobbins carrying the high current, and an apparatus for effecting this with a current of water is described and illustrated. The maximum field obtained was 63,700 gauss, 22,900 of which was due to the iron core. The current used was 5000 amperes. A field of 50,000 gauss was obtained without an iron core (energy 340 kilowatts). The possibility of obtaining still higher fields by this method of winding and cooling is discussed.—M. Bezssonoff: The pigments of Fusariurn. Two pigments are present: one yellow, belonging to the anthocyanic group; the other red identified with carotine, described by Wildst ter. E. Maurlé: The nutritive value of ossein. The nitrogenous material contained in bones is of considerable nutritive value. Details of the mode of extraction are given.—J. Danysz: The treatment of trypanosomiasis by arsenical compounds, combined with salts of silver and antimony (products 882 and 102i). The compound specially studied had the composition [C12H12. O2N2AgBr.AgBr. SbO(H2S04)2, and showed marked improvement in therapeutic properties against Tr. surra and Tr. gambiense as cormpared with compounds previous tried. In the case of the mice used for the experiments the fatal dose (per 20 grams) was 5 mgr., the tolerated dose 0.4 mgr. The ratio between the tolerated dose and the curative dose was 80: 1 for surra and 100: i for Tr. gambiense. Confirmative experiments were carried out on rabbits.—J. M. Barbosa: The bronchial sphincters in Deiphinus delhis.
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Societies and Academies . Nature 94, 54 (1914). https://doi.org/10.1038/094054a0
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DOI: https://doi.org/10.1038/094054a0