History, theory, and practice of the electric telegraph (1866)
Prescott, George B.(George Bartlett),1830-1894 · Boston, Ticknor and Fields · leaf 53
s case, which occupies aspace only eight inches long, fiveinches high, and two inches deep.It is charged in twenty seconds, anddischarged in one. It will work aline five miles long with ease forten hours, and is invaluable in mak-ing tests in places where the trans-portation and care of a large… … Fig. 14. PROPAGATION OF ELECTRICITY. 35 independently of friction. This power is often very intense, somuch so as to deprive smaller animals of their life, and to stun
Telegraph
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