Abstract
PARIS Academy of Sciences, August 8. —Papers were read on the relation between the specific heats and the coëfficients of dilatation of any body, by M. Phillips, and on the decimal division of the quadrant, by M. A. d'Abbadie, in which he communicated two letters on the subject from M. Nadau and Prof. Airy; and MM. Jamin and Richard contributed some observations on the determination of the relation between the two specific heats of gases.—M. Jamin replied to the two notes by M. Sainte-Claire Deville on July l8th, and entered again at length into the subject of the variations of temperature produced by the mixing of two liquids.—M. Laborde contributed a note on some new experiments on Holtz's electrical machine. —M. Elie de Beaumont presented, on behalf of M. Delesse, a lithological map of the embouchure of the Seine.—A note by MM. Rabuteau and Peyré was presented by M. Ch. Robin, on the poisonous effects of the m'boundou or icaja, a poison used at the Gaboon. The poison used was extracted chiefly from the bark, a small quantity also from the root. The experiments showed that the poison is extremely rapid; but that its fatal effects can be prevented by artificial respiration; the symptoms are in some respects similar to those produced by strychnine.—A letter was read from M. Lichtenstein to M. Dumas, on a means of preventing the irruption of the Phylloxera vastatrix in vines not yet attacked. The proposed plan is simply by destroying carefully, from May to August, all the branches on which the winged form of the insect has made its appearance.—A short note was also presented by M. L. Laliman, on a variety of vine (of the American species V. æstivalis) not subject to the attacks of the Phylloxera.
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Societies and Academies. Nature 2, 328 (1870). https://doi.org/10.1038/002328a0
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DOI: https://doi.org/10.1038/002328a0