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Scientific American, Vol. 44, No. 20 (May 1881) (1881)

leaf 4

An illustration from Scientific American, Vol. 44, No. 20 (May 1881), 1881, leaf 4
gle con- droppers necessitated a machine which could bore all the tains the grindstones upon which the knives are ground, vast agricultural resources of the Southern States, and the holes required for shafts, etc., at one operation, and several the tapping machines for serrating the edges of the… … work being a science peculiar to itself. farmer then had of securing his crop, BOLT AND NUT DEPARTMENT. The contents of the packing boxes are we are led to wonder how many cen- of such varied shapes and sizes that only long ex- turies must have elapsed before the land west of the The boring of the…

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