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Scientific American, Vol. 91, No. 1 (1904) (1904)

leaf 10

An illustration from Scientific American, Vol. 91, No. 1 (1904), 1904, leaf 10
his substance is preferable, as it is tion in the needle movement. Two binding posts are impervious to any of the liquid exuding from the pre- the same number of hours can shape by hand. The shown, which admit of connecting in a battery and served comestible—paper, or some such similar ma- actual… … parchment. The upper plate is then closed down flat A. Plunger. C. Cylindrical in its normal position upon the sheet of parchment. AN INGENIOUS WATER GAGE IN USE AT NIAGARA. In order, however, to prevent the plates holding the paper too tightly, the upper one is provided on its chart is removed and…

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