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Academy of Sciences, August 21.—M. Emile Roux in the chair.—Paul Viullemin: Disjunction and combination of the characters of the parents in a hybrid. Study of a hybrid of Aquilegia ccerulea and A. chrysantha.—N. Lusin and W. Sierpinski: The decomposition of the continued fraction.—H. Mineur: A class of uniform transcendentals.—H. A. Perkins: The resistance of thin electrified conducting layers. Experimental study of the effect of an electrostatic charge on the resistance of thin gold film. The film formed one plate of a condenser, and no change in the resistance could be measured with or without an electrostatic charge of 2-7 C.G.S. electrostatic units (800 volts).—F. W. Klingstedt: The ultraviolet absorption spectra of the diphenols. A quantitative study of the normal absorption spectra of the dihydroxybenzenes, made with the Fabry and Buisson microphotometer on photographs taken by V. Henri's method. The metaand ortho-derivatives have spectra very like that of phenol, but the para* compound has eight nearly equidistant bands instead of the three of phenol. The spectra are modified by certain solvents: with alcohol as a solvent it is impossible to recognise the characteristic differences between the para-compound and orthoand meta-derivatives. Hexane is the best solvent.—H. Gault and R. Guillemet: The chlorination of normal butyl alcohol. The chief product was found tq be the dibutyl acetal of dichlorobutyraldehyde, C4H6C12 (O.CH2. CH3. CH2. CH3). This acetal is not hydrolysed by aqueous potash, and only slightly hydrolysed by hydrochloric acid or dilute sulphuric acid at. 1500 under pressure.—G. Vavon and A. L. Berton: The borneol obtained starting with the magnesium compound of pinene chlorhydrate.—G. Murgoci: The properties of the blue amphiboles.—Marcel Mirande: The morphological origin of the internal liber of the Nolanacea? and the systematic position of this family. The Nolanaceae have been placed as allied with the Convolvulaceae or the Solanacea: it is shown that this family is well differentiated from the Convolvulaceas, but may be classified with the Solanaceas.—A. Guilliermond: Cytological observation on a Leptomitus and in particular on the mode of formation and germination of the zoospores.— Georges Bouvrain: The vascular evolution in Mer-curialis.—W. J. Vernadsky: Nickel and cobalt in the biosphere. The constant presence of nickel and cobalt in living organisms has not been proved; but they have been found in all cases when specially sought. They have been found in all the mosses studied in the neighbourhood of Kieff, and in nine species of plants from the same district. Cobalt has also been found in Echium vulgare from the Crimea, and in the ashes of a domestic mouse.—Louis Boutan: A fine culture pearl without nucleus.
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Societies and Academies. Nature 110, 436 (1922). https://doi.org/10.1038/110436b0
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DOI: https://doi.org/10.1038/110436b0