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Scientific American, Vol. 63, No. 14 (October 1890) (1890)

leaf 4

An illustration from Scientific American, Vol. 63, No. 14 (October 1890), 1890, leaf 4
t by strained exertion, but by regularity. The are artistically grouped and represent a large number mind can be so trained to this that at certain hours in of species. Mr. Bell says the number of insects de- net tons. ♦ « • ■ ♦ the day it will turn to a particular line of duty, and at stroyed in… … of bichloride mercury and an COKE OVENS ON THE BLUESTONE. W. VA. COAL MINE AND TIPPLE OW THE BLHESTONE, W. VA. © 1890 SCIENTIFIC AMERICAN, INC.

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