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Scientific American, Vol. 70, No. 2 (1894) (1894)
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as amount of moisture in the air is always under perfect 0 NEW BRITISH WAR BOATS OF GREAT POWER AND awarded two medals and two diplomas at the World’s control, the degree of humidity being registered by a SPEED. Columbian Exposition. The case has double top, bot- hygrometer. The eggs are quickly… … © 1894 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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