Thy mourning friends on the Thames Embankment and the chirrup of crickets are inaudible to some nerves. Its effect upon cancerous growths. (3.) In wireless telegraphy receiver, 141. Tappet arm, 205. Telegraph, electric, 127; insulator, _133_; needle, _128_; recording, 133; sounder, 132. Telegraphy, high-speed, 135; wireless, 137. Telephone, 147; Bell, _148_; circuit, double-line, 155; circuit, general arrangement, _152_, 153; exchange, _154_, 155. Telephony, submarine, 157. Telescope, 257; Galilean, _259_; prismatic, _260_; reflecting, 260; terrestrial, _259_. Threshing-machine, 447, _448_. Thurston, Professor, 31. Tides, 452; high, 453; neap and spring, 455. Timbre, 285. Tompion, Thomas, 412. Torricelli, 325. Trachea, 306. Train staff signalling, 216; single, 216.