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Scientific American, Vol. 28, No. 7 (February 1873) (1873)

leaf 9

An illustration from Scientific American, Vol. 28, No. 7 (February 1873), 1873, leaf 9
s were used, and thus to be flowing in valleys, once deeply excavated, but now par- powerfully electric than the balance of our atmosphere, it is probably cause the gun to fall after it came up and before tially filled, and in some instances, almost obliterated. Fur- but natural that the… … clone, and why it some- et gear. The ratchet is PNEUMATIC GUN CARRIAGE AND ELEVATOR—Fig, 3. fastened to the under- times rises suddenly af- The daily and the yearly variations of ter a clap of thunder. side of the crosshead, with teeth inverted, and the pawl is draining streams of New York and the…

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