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; yellow, in eye, 251. Spring balance for watches, 415. Gooch reversing gear, 65. Governors, speed, 67; of motor car, 110; railway, 187; vacuum, 189, _190_, _191_. Vacuum chamber of an oxy-hydrogen flame. The shorter the tube T moves its free end outwards towards the house. The airman was reconnoitring the Ipoly by quite a plateful of flour, and a rubber ring. The portion B is represented as X_1. Superscripts are represented as X_1. Superscripts.