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Scientific American, Vol. 55, No. 11 (September 1886) (1886)

leaf 9

An illustration from Scientific American, Vol. 55, No. 11 (September 1886), 1886, leaf 9
t, he will 5,000,000 gallons daily, with a pressure of 25 pounds to and as its slot is quite long, it may be moved forward surely be found a ready victim, to a more or less ex- the square inch. The well was sunk through the sur- or backward, in accordance with the position of the post tent, for a… … But the most important rule in the science of bat- Fig. 1. ting, which hasj up to within a few years past, been REISOR'S IMPROVED POST DRIVER. but little understood, is that governing what is tech- is at the bat. This is speciall}' necessary to meet the nically known as " facing for position," that…

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