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Scientific American, Vol. 97, No. 2 (July 1907) (1907)

leaf 3

An illustration from Scientific American, Vol. 97, No. 2 (July 1907), 1907, leaf 3
it to clear the obstacle. All of these advantages render the be oscillatory, and the smaller the current the more wheels, showing the peculiar serpentine form of track they trace. The wheels may be chain-driven from a wheel particularly valuable for agricultural purposes, is the bolometer heated.… … new art. cleated wheel is that TWO SAND FAINTEES AT WOBK AT BBIGHTON, ENGLAND.

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