INDEX 



379 



German translation, 195-196, 256 ; as inter- 

 preted by Herbert Spencer, 279, 282 



Thunder, bolt, 310, 311 ; crash, peal, roll, 311, 312 ; 

 cloud, 318 



Thunderstorms, lecture on, 255, 296-320 



Tides and tidal stresses, 193 



Time and action in planet's orbit, 100 



Todhunter, I., recommends book on quaternions, 



65 



Topping in golf, 26, 60, 333 

 Torricelli, E., quoted by Maxwell, 195, 222 

 Translations, " T and T," 195-196 ; Thermo- 

 dynamics, 226 ; Recent Advances, 228 ; Pro- 

 perties of Matter, 229 ; Heat, 229 ; The Unseen 

 Universe, 240 

 Treatise on Natural Philosophy. See Natural 



Philosophy 



Trefoil knot, symbolic of vortex atom, 105, 236 

 Trilinear coordinates, Cayley and Tail on, 164-165 

 Tulloch, Rev. J., and the Evening Club, 348 

 Turnbull, R., experiments on impact, 96 

 Turner, Sir William, at R. S. E., 30 

 Twist, Thomson's theorems on, 182 

 Tyndall, J., on Forbes, 18, 24 ; on history of 

 thermodynamics, 23 ; on diathermancy, 68, 

 92 ; controversy with Tail, 208 ; eulogy of 

 Mayer, 209, 213 ; book on heat reviewed, 209; 

 president of Brit. Assoc., 236 ; referred to in 

 Tail's lecture on Force, 253 ; letter to Tait on 

 Zollner and Clausius, 257 

 Tyndallic Ode, 145, 171-173 



Underspin in golf ball, 26, 27, 59, 330-344 



University, Tail's ideal, 248 



University of Edinburgh, student at, 6 ; elected to 

 chair, 16 ; Tercentenary, 33 



University Commissioners, 52, 71 



University Union Bazaar, 73 



Unseen Universe, The, 24, 36, 105, 236-245 ; re- 

 viewed in leading journals, 239-241 ; French 

 translation, 240 



Unveiling of Peterhouse portrait, 48 



Vacua, experiments on high, 81, 82 

 Vacuo, rotation of disk in, 23, 68 



Vapour, diathermancy of water, 92 



Vector methods, 14 



Velocity of charged particles in cathode rays, 91 



Verdet, E., letter to, 32, 210; book reviewed, 



209, 210 

 Verses, by Tait, 55-56, 61-62, 93 ; by Maxwell, 



94-95, 242-243, 253-255, 261 ; by D'Arcy 



Thompson, 237, 238 

 Vertices, curve of, 324-326 

 Vince, S., observations of mirage, 109 

 Virgil, on thunderbolts and comets, 311 

 Viscosity in water flowing in tubes, 1 14 

 Vortex, rings, 68, 69 ; atom, 68, 69, 105, 177 ; 



knotted, Maxwell on, 105 ; motion, 127 

 Vorticity and curl, 148 



Waals, Van der, isothermal equation, m, 112 



Walker, T. A., history of Peterhouse, 14 



Walking stick, story of Tail's, 72-73 



Wallace, Robert, and the Evening Club, 347 



Walsh, General, at St Andrews, 57 



Wanklyn, J. A., experiments with Tail on elec- 



Iricily developed during evaporalion, 68 

 War, South African, 37 

 Waler Vapour, dialhermancy of, 92 

 Watson, W., treatise on Kinetic Theory of Gases, 



ill 

 Watson, Sir Patrick Heron, school mate, 5 ; 



description of Tait, 1 8 

 Wave surface, 124-126, 128-130, 141 

 Wertheim, G., German translalion of " T and T'," 



195-196 



Wheatstone's revolving mirror, 301 

 White, Rev. E., condilional immorlalily, 37 

 Whytt, R., 306 

 Williams, Archdean, 6 

 Wilson, Andrew, aulhor of the Abode of Snow, 



school mate, 5 



Wollaston, W. H., on mirage, 321, 322, 325, 328 

 Wrangler, Senior, 9 



Yvelot, posls in, 249-250 



Zeeman, P., 90 



Zollner, F., book reviewed, 256-257 



CAMBRIDGE: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS. 



