g the black, opaque material. In the construction of this guired which automatically maintains a constant cur- total weight 1,400 pounds. The camera is so con- bellows over 40 gallons of cement, two bolts of rent. As a highly efficient type of such valves we structed that after a long journey the… … secured after an exposure of two and a shaft formed on a milled head. The disk half minutes, on a Cramer isochromatic is provided with a pointer projecting plate, this special plate being used to pre- through a slot in the tube and playing wood were used. The bellows is divided into four serve the…
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