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Scientific American, Vol. 1, No. 9 (1859) (1859)

leaf 7

An illustration from Scientific American, Vol. 1, No. 9 (1859), 1859, leaf 7
ovement by in- windmill with which we were amused for kours.. be of great use in many asmall workshop. Such a ma- clining his body alternately to either . side of the rock- chine is the subject of our engraving, which is a per- shaft. This movement of the platform gives, through spective view, and… … of asphalt as the foundation for the walls of buildings, in damp situations. It may also be used-in place of hydaulic cement, or common mortar for the joints of bricks in walls built underground, as it can withstand by the weight of the workman, his hands being perfectly shaft, C, and arm, E, and…

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