percussion cap and fire the powder. The mind than his steamboat. On one occasion he invit- machine is anchored, presenting the prongs on the ed the City Fathers of New York, and a large num- upper end of the lever in sucha way that boats going ber of prominent citizens, naval and marine officers,… … ted at the same depth. With such a battery he proposed to fire intothe hulls of enemies’ war ves- sels under their water-lines, and thus sink them. Such submarine batteries were designed to be carried and ignite the powder. C is a canvas bag, contain- in war vessels, and when required they were to…
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