Williams, Henry Smith, 1863-, Williams, Edward Huntington, 1868-1944, joint author · New York and London, The Goodhue company · leaf 76
s. The observation of logs orround stones rolling down a hiU might also have stimu-lated the imagination of some inventive genius. Probably logs placed beneath heavy weights, suchas are still employed sometimes in moving houses, wereutiHzed now and again for many generations beforethe idea of a… … THE ANIMAL MACHINE record—those, namely, of Old Egypt and of Old Baby-lonia—in full possession of the principle of the wheelas applied to vehicles. Modem mechanics have, ofcourse, improved the mechanism as regards details,but the wheels depicted in Old Egyptian and Babylonianinscriptions are…
Industrial arts · Machinery
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