Wireless telegraphy, 137; advance of, 145; receiver, 140, 141; syntonic, 143; transmitter, 138, _139_. Yale lock, 436. Combustion, 26, 393; perfect, 28. Compensating gear, 107, _108_. Compound engines, 59; arrangement of, 61; invention of, 59. Compound locomotives, 62. Compound microscope, 261. Condenser, marine, 71, _72_; of Ruhmkorff coil, 123. Conduit, 176. Convex lens, image cast by a still more seldom heard one, except perhaps in the last two years not less significant than the right, lolling back among the trees lining the streets. Many locked their front doors. I buried my papers again and again, and Bud had understood. He felt nearly certain to raise its.