Abstract
IF we study the past in order to trace the development of machines, we cannot help being astonished at the long centuries during which man was content to employ only his own muscular effort and that of animals, instead of utilizing the other forces of Nature to do his work; for it is a striking fact that it is during little more than the last quarter of a century that the power of the steam-engine has in the aggregate become twice as great as that of the whole working population of the world.
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Perpetual Motion 1 . Nature 37, 254–256 (1888). https://doi.org/10.1038/037254a0
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DOI: https://doi.org/10.1038/037254a0