unds exist- required by the use of the ordinary forms of testing machines, the socket for the drill, a pulley with a spiral spring, and a ing in drinking water (described in the Scientific Ameri- designed the apparatus shown. By it a wire maybe attached hollow casting which acts as a flywheel and… … gradually, and by the application of the same weight, all lia- QUICK-SPEED DRILL. : first distillate then yielded 0 32 and the twenty-second 0'005 bility of erroneous tests from changing or moving of weights, case to contain the ratchet and pawl necessary to prevent of a milligramme of ammonia. as…
