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Scientific American, Vol. 15, No. 12 (1866) (1866)

leaf 15

An illustration from Scientific American, Vol. 15, No. 12 (1866), 1866, leaf 15
ard pressure of the external at- spring brings the foot with its shaft back to place, mosphere ; for the borer with its load of earth fits oe IT is said that wool washed on the sheep shrinks and the foot can be elevated to any required point by the hole as a piston fits acylinder. But upon rais-… … ary and July, poles, etc. It is equally Per annum. efficient on a large scale Six months............. Ten copies for One Year. as when operated by hand Canada subscriptions, 25 cents extra. §; for post holes. By reference to the engraving, the de- the apparatus to be lifted. Patented July 31, 1866’…

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