IN NATURE, vol. xi. p. 249, Mr. Carr mentions the fact that some iron pyrites in the Maidstone Museum “have crumbled into a coarse, finely divided mass;” and he inquires whether “such a thing has ever ...

THE “curious phenomenon” described by Mr. Frederic Case (NATURE, vol. xi. p. 249) is by no means an uncommon one. It is due to oxidation, and the conversion of a portion of the pyrites into soluble ...

DUBLIN--(BUSINESS WIRE)--Research and Markets (http://www.researchandmarkets.com/research/vxfqss/china_trade_of) has announced the addition of the "China Trade of ...

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