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Scientific American, Vol. 87, No. 11 (1902) (1902)
leaf 4
merous small pipes to the center of the second and third cham- bers respectively, after which they pass out into the air. By thus con- ducting the gases from | _, cs the center of each cham- ber through tubes, in- Ce ta i ai LL stead of simply letting them pass through holes in the separating… … © 1902 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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