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Scientific American, Vol. 54, No. 19 (1886) (1886)
leaf 7
ng in collision frog, and that slowed the with the rock thrown op- heart’s action from twenty- positely from the other foar beats a minute to ten cup, is broken and pulver- in two hours and a half, ized, and the grinding, when he killed it. which would otherwise be The same amount of Mr. upon the… … seven minutes, and in Mr. rock to a greater fineness Wakefield’s case there was than the screen outlets al- a slowing of. ftom thirty- © 1886 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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