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Scientific American, Vol. 38, No. 2 (1878) (1878)

leaf 8

An illustration from Scientific American, Vol. 38, No. 2 (1878), 1878, leaf 8
he chair shaft was not broken as was supposed, but that the key of is raised up in the scoop, the stop is released, and the balance | by a toothed clamp and guide device, the book rest being ad- the propeller had given way and the screw became loose on being free to act, the weight of the material…

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