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Scientific American, Vol. 36, No. 23 (1877) (1877)
leaf 3
t when fired at slight elevation. tween centers of trusses, with two outside footways of 6 feet The weapon is constructed of gun metal, and thus is almost feet 4inches in length, and thence by nine brick arches 48 8 inches in the clear, making the total width from out to out impervious to wet,… … © 1877 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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