Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 514
the greater thenumber of devices we find that are similar toimportant engineering inventions in use to-day. In his upward progress from savagery to civili-zation, man did not grasp many of these inven-tions by observing nature. Most of them he hadto learn by hard study and experiment. Yet allthe… … Gkey prove-cl to i><£< ex- most oLxve-Ttx^o pctXT1.
Children's literature
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