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XVIII. Naval Warfare. Mechanical Appliances. Music. Index
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1120.

p. 278

Just as on a frozen river a man may run without moving his feet, so a car might be made that would slide by itself.

 624


Footnotes

278:624 : The drawings of carts by the side of this text have no direct connection with the problem as stated in words.--Compare No. 1448, l. 17.


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