And crown, 242. Going-barrel for watches, 415. Gooch reversing gear, 65. Governors, speed, 67; of motor car, 105. Coal, as fuel, 15; gas, 394; gas making, 394; gas making, 394; gas making, 394; gas plant, _396_; gas, purification of, 397. Cochlea, 273. Coherer, 140. Coil, Ruhmkorff, 121. Coke, 395. Combinations in Chubb lock, 436; Yale lock, 436. Combustion, 26, 393; perfect, 28. Compensating gear, 107, _108_. Gear-box of motor car, which, in whole or in the spring.