Abstract
LONDON. Royal Microscopical Society, March 17.—Prof. John Eyre, president, in the chair.—T. E. Wallis: The Lycopodium method of quantitative microscopy. Various methods have been devised by different workers in an attempt to find a satisfactory method of making determinations of percentage composition by means of the microscope. The most trustworthy of these require specially constructed apparatus and are applicable in certain instances only. The Lycopodium method, is, simple in principle, and with slight modifications may be used for all kinds of problems.. The only apparatus needed is such as is used in. ordinary, microscopical work. The results are correct to within 10 per cent, of the amount to be determined; they can therefore, be utilised with the same confidence as is the case with results obtained by many well-known chemical operations having a similar range of error.—C. Da Fano: Method for the demonstration of the Golgi apparatus in nervous and other tissues. The author has been able to obtain a fairly constant staining df this peculiar intracellular formation by substituting cobalt for uranium nitrate in a formula originally proposed by the Spanish biologist, S. Ramon y Cajal, Da Fano's modification can be easily applied to all sorts of tissues, as proved by an interesting series, of quite demonstrative microscopic preparations and lantern slides shown at the meeting. Another step has thus been taken in the study of the “internal apparatus” discovered by Golgi in 1898, the functions of which, however, still remain quite mysterious to biologists and physiologists.
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SILBERSTEIN, L. Societies and Academies. Nature 105, 249–251 (1920). https://doi.org/10.1038/105249a0
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DOI: https://doi.org/10.1038/105249a0