Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 411
A MORTAR-BATTERY IN POSITION. ONE OF THE RIFLED MORTARS IS SHOWN ABOVE ON A LARGER SCALE. 397 398 HARBOR DEFENSES. [Mar. … A SELF-MOVING TORPEDO ON ITS WAY TO ATTACK A MAN-OF-WAR. through, and are arranged in threes andset closely in the channel according toplans previously arranged. If necessary,the sea off the entrance to a harbor orbay could be well filled with them.These mines may be exploded or maybe perfectly…
Children's literature
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