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The Daguerreotype camera
Published in "The History and Practice of the Art of Photography; or the Production of Pictures Through the Agency of Light" (New York: G.P. Putnam, 1849), p.57
The camera is a dark box (a), having a tube with lenses (b) placed in one end of it, through which the radiations from external objects pass, and form a diminished picture upon the ground glass (g) placed at the proper distance in the box to receive it; the cap c covering the lenses at b until the plate is ready to receive the image of the object to be copied.