A System of Mineralogy: Descriptive Mineralogy, Comprising the Most Recent Discoveries

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J. Wiley & Son, 1868 - 827 pages
 

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Page vii - To change is always seeming fickleness. But not to change with the advance of science, is worse ; it is persistence in error...
Page xl - Catalogue systématique et raisonné des curiosités de la nature et de l'art qui composent le cabinet de M. Davila, avec figures en taille douce de plusieurs pièces qui n'avaient point été gravées; Paris, 1767 , 3 vol. m-8".
Page 195 - a flinty slate, black, grey or white,"8 but a "velvet black siliceous stone or flinty jasper used on account of its hardness and black color for trying the purity of precious metals. The color left on the stone after rubbing the metal across it indicates to the experienced eye the amount of the alloy.
Page iv - ... or in that of a copyist from it. Neither the consultation of original authorities, the drawing of conclusions, nor the putting of the results on paper, has been delegated to another.
Page xlv - Report on the geology of the Lake Superior land district : by JW Foster and JD Whitney, United States Geologists. Part II.

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