with in the present day of lightning In removing the sensitive plate, the pivoted clamp is or cement being interposed between each series. This dry plates is a leaky plate holder, particularly when binding material holds the plates together, and in- first turned up. At once the springs underneath… … Fig. 4 shows the WABNEB'S IHPBQVED DBY PLATE HOLDEB. pivoted clamps down, when hold- ing the plates. The dotted line indicates the position since the slightest trace of light entering at some mi- when thrown up. nute crevice will frequently damage a day's work. By Fig. 5 represents another form of…
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