ook is worn, it can be or sour gum, a wood which will not easily split. The ends to 1% inch diameter by 4 inches long. The legs bottom face of the framework is in the same plane, turned over, and the other side be used. are 1% by 1% inches, spread at the base 33 inches m 1 ■ 1 » in other words lies… … CONSTRUCTION OF A TBESTLE. A SIMPLE METHOD OF MEASURING THE SPEED OF PHOTOGBAPHIC SHUTTERS. IZ_ \ fixed a tiny brush dipped in a strong solution of an aniline color. A stop, (?, serves to limit the move: LI JL11 ment of the mica plate in either direction. Below the plate a drum, F, covered with…
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