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Scientific American, Vol. 25, No. 26 (December 1871) (1871)

leaf 7

An illustration from Scientific American, Vol. 25, No. 26 (December 1871), 1871, leaf 7
de to swing, by its own rules for securing favorable results: will be seen that the contraction of this rubber cushion when gravity, either one way or the other, as the hinge is thrust 1. The nest must be placed in a cool position. . entering the cup-shaped cavity in the end of the pedestal, and to… … AUTOMATICALLY ACTING OR ROCKING GATE. 1871. For further in- as it is tilted from Wendell & Francis, 436 Walnut street, formation address side to side by the action of the bridges, of which there are at once, and placed in separate inclosures until this propen- two, as shown. Philadelphia, Pa. sity…

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