Abstract
EDINBURGH. Royal Society, July 5.—Sir E. A. Schafer, vice-president, in the chair.—Sir William Turner: A contribution to the craniology of the people of Scotland: Part ii., prehistoric, descriptive, and ethnographical. Judging from the size and general plan of the skull of the prehistoric inhabitants of Scotland, he found nothing to show that these very remote ancestors were not people of great brain-power.-W. Evans: Mallo-phaga and Ixodidae, Ectoparasites of birds from the Scotia collections (Scottish National Antarctic Expedition). Interesting examples were recorded of the same species of parasite infesting closely allied species of birds.-Dr. J. R. Milne: Mathematical theory of the harmonic synthetiser: part ii. Nine years ago the author described an instrument for drawing the curve which is the sum of a number of simple harmonic curves. The apparatus makes use of Kelvin's summation wire and an approximate method of obtaining harmonic motions which was rejected by him as insufficiently accurate. It was shown, however, in the previous paper that if the various parts be properly proportioned, the error can be made very small. The more complete mathematical discussion in the present paper shows how it may be reduced to negligible dimensions.-Prof. C. R. Marshall and Miss Elizabeth Gilchrist: The interaction of methylene iodide and silver nitrate.-James W. Munro: The structure and life-history of Bracon hylobii, a study in parasitism. The Hylobius abietis was the most dangerous insect enemy to forestry in Scotland. One way of fighting it was by the breeding and setting free of a parasitic enemy. Such a parasite is Bracon hylobii.-Miss Augusta Lamont: The lateral sense organs of Elasmobranchs; the ampullary canals of the genus Raia.
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Societies and Academies . Nature 95, 665–666 (1915). https://doi.org/10.1038/095665a0
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DOI: https://doi.org/10.1038/095665a0