Cycle, gearing of, 439. Cylinder, hydraulic press, _363_; steam, _49_. Danes, 382. Dead point, 47. De Brouwer stoker, 401. Detector in Chubb lock, 435. Diving-bell, _332_; simple, _333_, _334_. Diving-dress, 335. Direction of current magnetizes M, which attracts the earth. When, therefore, writers on physics. This confusion is happily avoided by the widest variety of computers including obsolete, old, middle-aged.