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Scientific American, Vol. 65, No. 2 (1891) (1891)

leaf 7

An illustration from Scientific American, Vol. 65, No. 2 (1891), 1891, leaf 7
would thus have the havinga curved and forwardly projecting hinged back. advantange of being discernible, but in the valleys employ one pigeon more for each extra 30 miles, so Within the stack is an oil box, supported upon a that, for example, for 150 miles we would let loose 5 and at the side of… … turned on, after which the feed is regulated so that the paired pigeons, in which the birds generally remain oil will only pass a little above the bottom of the when they re-enter the cote. Each pair has its own deflector, the oil being vaporized by the heat of the cage, the height and length of…

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