Abstract
LONDON Chemical Society, March 20.—Dr. W. H. Perkin, president, in the chair.—The following gentlemen were elected Fellows:—F. W. Brown, H. Cave, F. W. Fleming, E. E. Graves, A. E. Lewis, J. E. London, G. A. Parkinson, S. Smith, G. Tunbridge, T. U. Walton.—The following papers were read:—Note on the preparation of marsh gas, by Dr. J. H. Gladstone and Mr. A. Tribe. In 1873 (Chem. Sac. Journ. xi. 682) the authors described a reaction in which pure marsh gas was obtained by the action of the copper-zinc couple on methyl iodide in the presence of alcohol. The loss of the methyl iodide was considerable, 23 to 50 per cent. In the present note the authors describe a slight modification by which this loss can be prevented. It consists essentially in passing the gas evolved through a vertical tube twelve inches long filled with the copper-zinc couple.—On the action of dibrom-a-naphthol upon amines, by R. Meldola. The author has investigated the action of dibrom-α-napthol upon anilin, orthotoluidin, paratoluidin, and α-naphthylamin. With anilin a body was obtained which proved to be β-naphthoquinonedianilide; similar bodies were obtained with toluidin, &c. This reaction therefore furnishes a simple method of obtaining these quinoneimides in large quantities. The author also discusses the bearing of this reaction on the constitution of these bodies.—Note on the existence of salicylic acid in the cultivated varieties of pansy and in the Violaceæ generally, by A. B. Griffiths and E. C. Conrad. The authors state that they have extracted salicylic acid from the leaves, stems, and roots of the pansy; apparently none exists in the flowers.
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Societies and Academies. Nature 29, 541–544 (1884). https://doi.org/10.1038/029541a0
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DOI: https://doi.org/10.1038/029541a0