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Scientific American, Vol. 44, No. 12 (1881) (1881)

leaf 3

An illustration from Scientific American, Vol. 44, No. 12 (1881), 1881, leaf 3
holes with metal dies the contrac- having an internal diameter of 1 inch. The top end, instead Mr. Alphonse J. Delavigne, of New Orleans, La., has of being sealed, is spread out intoa cup shape, having a small orifice plugged with a stopper of rubber. The Mr. Volney W. Mason, of Providence, R. 1.,… … nected triangular folding by pouring the glycerine standards, and are provided gently down on one side. with a crank for swinging the After allowing it to rest for cradle. A bent rod from which a fan is suspended is attached some time, the air bubbles will be found collected at the Mr. David 8.…

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