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Scientific American, Vol. 87, No. 6 (1902) (1902)

leaf 9

An illustration from Scientific American, Vol. 87, No. 6 (1902), 1902, leaf 9
lowing tides ceaselessly deposit spection purposes, or in roads that have but small thermal units. The very best anthracite coal has a mud which the ebbing waters fail to traffic it will be found useful for pos- away. Filth, garbage and tal services. The frame, which is of steel tubes, is… … six spokes. Two lever brakes, one of erful tide-currents will thoroughly flush them of great energy, act respectively out all the wide expanse of bay which upon each of the hubs, and can be operated, according has heretofore had no suitable outlet. The following value of only 14,000 degrees thermal…

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