Abstract
MOST of those who were students of petrology in the later years of the nineteenth century were familiar with a modest volume, published by the late M. Jannettaz, under the title of “Les Roches.” It had a special interest for English readers, as it enabled them to realise the lines on which the teaching of the subject was carried on in France. Amongst other matters, it comprised a readable account of the Haiiy system of crystal notation long forgotten in this country, a short section on crystal optics, and a description of the chief rock-forming minerals and rock types.
Les Roches et leurs Eléments minéralogiques; Descriptions, Analyses Microscopiques, Structures, Gisements.
By Ed. Jannettaz. Fourth edition, revised and enlarged. Pp. 704. (Paris: A. Hermann, et Fils, 1910.) Price 8 francs.
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E., J. Les Roches et leurs Eléments minéralogiques; Descriptions, Analyses Microscopiques, Structures, Gisements . Nature 85, 166–167 (1910). https://doi.org/10.1038/085166a0
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DOI: https://doi.org/10.1038/085166a0
