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Scientific American, Vol. 76, No. 26 (1897) (1897)
leaf 8
e, as the source of projectile force. the line of flight is obtained by prolonging the inner second, that being the speed at which a ball of fair velocity is pitched. If, for any cause, the pressure in the barrel becomes greater than that necessary to pro- of pitcher does not seem to be at all… … the necessity of signals charge is needed. The rea- © 1897 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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