sists of an outer mide sensitive compounds is now so complete that circular opening, acircular negative is obtained. When photographs are readily made instantaneously with the box of sensitive material is slid home into the rear far less trouble than was required in the days of the daguerreotype or… … The latter will revolve continuously in one direction, previous preparation and apparently without limit. stopping at each pressure of the release pin, for at The novel apparatus shown in our engravings is de- Jeast four or five times, before the shutter spring is signed to hold enough sensitive…
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