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Scientific American, Vol. 36, No. 12 (March 1877) (1877)

leaf 6

An illustration from Scientific American, Vol. 36, No. 12 (March 1877), 1877, leaf 6
e. The eye should the plate upside down, and strike the blows denoted by the copper upon moulds of wood, covered with plaster and cor- also be cast along the edges to note any twist or locate any marks or dashes at C, Fig. 13; and the kink will be removed. rectly shaped on a lathe) such a curvature… … by its rings alone is quite impossible, there being other con- ditions of growth quite as important, and even more so, than To straighten the plate shown in Pig. 9, we place it upon the the relative size and height of its trunk and branches. Hav- anvil, as shown in Pig. 14, striking blows as…

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