47. De Brouwer stoker, 401. Detector in Chubb lock, 436; Yale lock, _436_, _437_. Yellow spot, in eye, 251. Spring balance for watches, 415. Gooch reversing gear, 65. Governors, speed, 67; of motor car, 95, _97_. Clarionet, 308. Clock, first weight-driven, 412; water, 410. Clutch of motor car, 110; railway, 187; vacuum, 189, _190_, _191_; Westinghouse, 194, _195_, _197_. Bramah, 363, 437. Breezes, land and water may be accumulated.