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On the development of the chemical arts, during the last ten years

โœ Scribed by A.W. Hofmann

Publisher
Elsevier Science
Year
1877
Tongue
English
Weight
274 KB
Volume
103
Category
Article
ISSN
0016-0032

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ON TttE DEVELOPMENT OF THE CIIEMICAL ARTS, DURING THE LAST TEN YEARS? By DR. A. W. HOF)IAh~.~. From the Ultemical ~5~ws.

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Itofmann--JDevelopment of the Chemical Arts. marginal rays. The ray R will cut the axis at/Vp, and/~' farther off at F, and therefore the image of a luminous point is no more a point, but appears elongated, and in the extreme has the shape of a coma, which in this case is directed downwards. If we

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Weldon's process, lastly, is worked more rapidly than the old method, and requires a smaller number of sandstone troughs, though the latter advantage is out-balanced by the cost of the oxidation apparatus. The productive power of a sand-stone apparatus was, on the old process, 1270 kilos, of chlorid