Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 306
meson which wires werestrung, breaking themin its flight. Thesewires were electricallyconnected with a littlehouse on the hill above,and there registeredon the delicate chro-nograph the speed atwhich the projectile traveled, and soon the ting-ling bells told the story: one, nine, seven, five— 197s… … A 12-INXH RIFLE. tile thirteen miles, or sends it through twenty-four inches of ordinary steel! Our armor is the best in the world. It ismade so by the genius of an American namedHarvey, who invented a process for hardeningits surface, so that the plates of Harveyizedsteel, eighteen inches thick,…
Children's literature
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