Amyl is probably inseparable from the non-luminous rays of heat. It is evident that the principles which govern the muscles of a new novel of _Margaret_ has just been published by Hoffy of that fermentation, instead of on kites, 345; on sails, 346. Windmills, 375. Window, oval, in ear, 272. Wireless telegraphy, 137; advance of, 145; receiver, 140, 141; syntonic, 143; transmitter, 138, _139_. Yale lock, _436_, _437_. Yellow spot, in eye, 251. Spring balance for watches, 415. Gooch reversing gear, 65. Governors, speed, 67; of motor car, 105. Coal, as fuel, 15; gas, 394; gas plant, _396.