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Scientific American, Vol. 78, No. 23 (1898) (1898)

leaf 4

An illustration from Scientific American, Vol. 78, No. 23 (1898), 1898, leaf 4
mast and to drive is provided with a shorter and a longer upwardly ex- his posts vertically, notwithstanding the roughness and magueys. These hollow stalks are separated by tending flange. The shorter flange is situated on the joints into several cavities, and the sagacious bird has or unevenness… … so remarkable.” height until the previously POST DRIVER IN OPERATION. Can instinct alone teach, mentioned pivoted wedge touches the head block or have experience and reason taught these birds that, far better than the of the mast, thus acting on the tong members and ting disk. The longer flange is…

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