Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 485
THE EARTHS MOVEMENT How would you go about proving in your ownhome that the earth actually turns around in thecourse of a day? There are, of course, compli-cated instruments in the laboratories which indi-cate the earths motion, and there is, of course,the evidence of the suns path; but the thing… … THE LINES as THEY APPEAR AFTER THELAPSE OF SEVERAL HOURS. diameter and fairly deep, and place it on thefloor of some quiet room. It is important that thefloor be entirely free from vibration, and thatthe bowl shall stand absolutely undisturbed for 1914] NATURE AND SCIENCE FOR YOUNG FOLKS 943 •^P^
Children's literature
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