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Scientific American, Vol. 30, No. 12 (1874) (1874)

leaf 4

An illustration from Scientific American, Vol. 30, No. 12 (1874), 1874, leaf 4
tween any point on ful pair of shear legs, erected on an iron barge or pontoon. affording a sure footing to the animal on icy pavements, to the earth’s surface from sun or moon and the distance of the When afloat, the blocks were conveyed to their destination earth’s center of gravity, or by… … of plate and angle iron, with a cross girder resting on the governed, as by the relative position of the pointe, c and ¢’, economize in horseshoes and time; for instead of shifting top; above this girder there were two sets of pulleys, through the time of vibration of the horizontal pendulum is…

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