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Knight's Mechanical Encyclopedia (ed. Knight) 2 0 Browse Search
Waitt, Ernest Linden, History of the Nineteenth regiment, Massachusetts volunteer infantry , 1861-1865 2 0 Browse Search
The Daily Dispatch: July 28, 1864., [Electronic resource] 1 1 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
nalloyed portions by oil of lavender. The French government granted a pension of 6,000 francs to Daguerre, one half to revert to his widow; 4,000 francs to Niepce's son, with reversion of one half to his widow. Niepce died in 1833, Daguerre in 1851. Da-guerre′o-type Etch′ing. A mode of etching by means of the influence of light on a prepared plate. The plate becomes exposed where the dark lines of the image fall, and the plate is corroded at those places by a subsequent operation. Dahl′gren gun. Named from the late rear-admiral John A. Dahlgren, of the United States navy. A gun in which the front portion is materially lightened and the metal transferred to the rear, giving the bottle-shape, which caused some surprise on their first appearance in Europe. Colonel Bomford, chief of ordnance of the United States army, commenced making this experiment previous to the war of 1812, and gave the name of Columbiad to the piece. Da′is. A raised platform at the upper end