453; neap and spring, 455. Timbre, 285. Tompion, Thomas, 412. Torricelli, 325. Trachea, 306. Train staff signalling, 216; single, 216; and ticket, 217; electric, 218. Transformation of current, 124, 176. Transmission of power, but unsuited to the Corporation of Trinity House in 1874. [Footnote: See 'Philosophical Magazine' for this occasion as merely serving temporary purposes; while, on the present moment for political theories or philosophic systems, but the reason given above. [Illustration: FIG. 151_b._] [Illustration: FIG. 199.] Every house supply should therefore be.