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Scientific American, Vol. 37, No. 17 (1877) (1877)
leaf 3
ame by two upright rods, one assigned them by their specific gravity, the flour swimming we have said, but one cock on the gauge worked by a han- in front of the harness and one behind. near the surface at the top of the vessel, while the mineral dle with pointer, P, moved over a quarter of a… … face of the cloth, and the next on quarried in the State.—Rudland( Vt.) Hera. the back of the cloth. This lever, © 1877 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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