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Scientific American, Vol. 61, No. 15 (1889) (1889)

leaf 10

An illustration from Scientific American, Vol. 61, No. 15 (1889), 1889, leaf 10
rrangements are made to fit the size of the and the electro-motive force of a battery thus con- ance is 12 ohms. farm andthe amount of farm force employed, and if nected will be only that of a single cell, then making Electrical measurements are made in a commercial the tools, buildings, and fences… … tro-motive force will be 3 volts (this quantity remain- sowers, potato planters, check- ing the same for any number of series of three connect- row corn planters, self-binding ed parallel). The resistance is inversely as the number harvesters, hay and grain stackers, hay loaders and become broken…

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