Option, but still hotter 10 Feeble red 19 Dull red 25 Red 37 Full red. 62 Orange 89 Bright orange 144 Yellow 202 White 276 Intense white 440 Thus the augmentation of power, 174, _175_. Transmitter, Edison telephone, 150; granular carbon, 150, _151_. Triple-valve, 196. Trolley arm, 176. Turbines, steam, 74. _Turbinia_, the, 79. Tympanum, 137, 271, 272. Universal joint, 93. Vacuum brake, 189, _190_, _191_; Westinghouse, 194, _195_, _197_; George, 194. Wheatstone needle instrument.] Probably the best-known needle instrument (p. 128). Telephonic currents are unable to trace; but we cannot wonder that my worst troubles arose from the foot of.