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Scientific American, Vol. 78, No. 22 (1898) (1898)
leaf 3
rcuit and the mine should be instructed to test the vision of new pupils that a large six-inch vibrating bell is connected up in instantly explodes, breaking the warship into splinters, and record the same in a register, informing the par- the local circuit in addition to the telegraph sounder. and… … TELEGRAPHY. © 1898 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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