The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . FlG. I.—Contact Mine. Mine case held by cable justbelow surface. Anchor rests on bottom. ment of the subinarine mine under the stress ofthe Confederacys struggle — a record of variedand ingenious appliances that stands withouta parallel in the annals of civilized warfare;but space does forbid, and the list of Federallosses tells plainly enough the deadly might ofthe crude, powder-filled, passive obstructions ofa hard-pressed but fertile foe f
The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . FlG. I.—Contact Mine. Mine case held by cable justbelow surface. Anchor rests on bottom. ment of the subinarine mine under the stress ofthe Confederacys struggle — a record of variedand ingenious appliances that stands withouta parallel in the annals of civilized warfare;but space does forbid, and the list of Federallosses tells plainly enough the deadly might ofthe crude, powder-filled, passive obstructions ofa hard-pressed but fertile foe forty-odd yearsago. To-day, gun-cotton — substantially un-affected by water — has supplanted the short-lived, damp-killed powder of the past; and, inreplacing that old explosive, has brought to the SUBAIARIXE Explosion of Cf)ntact Mine Loaikil Willi 75 lr>unils of (iiiiUoUoii. SUBMARINE MINES modern mine, pound for pound of charge, adestructive miglit four times as great. Its Defensive Character.— Tlie submarinemine, unlilce tlie topcdo of to-day, must besought by the foe; and its prime weakness, ofcourse, lies in its immobility. Secrecy of em-placement and well-guarded approach are vitalto its efficiency; and, for this reason, the present
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