Elasticity, Poisson-Navier theory of, 291; encyclopædia article on, 297 Electrical oscillations, 181 _et seq._ Electricity, mathematical theory of, 33 Electrolysis, mechanical theory of, 176 Electrometers, 223 _et seq._ Electromotive forces, estimation of, by heats of combination, 178 Electromotive forces, measurement of, 179 _Electrostatics and Magnetism_, 222 _et seq._ Ellis, Robert Leslie, 26 Energy, dissipation of, 139 Faculty, the, of the University of Glasgow, 4, 63-67 Faraday, 61 Faure, M., 81 FitzGerald, G. F., 301, 305 Fourier, _Théorie Analytique de la Chaleur_, 16 _et seq._ Gauss, 28 Gauss and Weber, 245 Green, George, of Nottingham, 21, 30, 294 Gregory, J. W., 241 Goodwin, Harvey, 26 Gyrostats and gyrostatic action, 214, 284-286 Hamilton, Sir William Rowan, 196, 294 Heat, encyclopædia article on, 297 Heaviside, Oliver, 294 Helmholtz, von, 113 Hertz, 191, 256 Hopkins, William, 23 Huxley, 77, 196, 242 Hydrodynamics, 153-175 Images, electric, 31, 38-59 Inversion, electrical, 49 _et seq._ Inversion, geometrical, 59, 60 Joule, James Prescott, 77, 86 _et seq._, 101 _et seq._ Larmor, Joseph, 256 Lectures on Natural Philosophy at Glasgow, 279 _et seq._ Liouville, 31 Liouville's _Journal de Mathématiques_, 25, 26, 31 Loschmidt, 262 Lubbock, Sir John (Lord Avebury), 85 Luminiferous ether, motion of planets through, 256 Magnetism, theory of, 227 Mariners' compass, 272 _et seq._ Maxwell, 117, 193, 305 Mayer, of Heilbronn, 105 McFarlane, Donald, 96, 287, 289 McKichan, Dugald, 193 _Mécanique Analytique_ of Lagrange, 199, 205 _Mécanique Céleste_ of Laplace, 199, 205 Meikleham, William, 61 Mirror galvanometer, 268 Motivity, thermodynamic, 138 Natural Philosophy, Chair of, at Glasgow, 63 _Natural Philosophy_, Thomson and Tait's, 196 _et seq._ Navigational sounding machine, 272 Newton, 195, 202 Nichol, John, Professor of English Language and Literature, 5 Nichol, John Pringle, Professor of Astronomy, 5, 20, 61, 63 Oersted, 61 Oscillations, electrical, 181 _et seq._ Parkinson, Stephen, 27 Peltier, 148 Pendulum, ballistic, 288 Perry, John, 240, 296 Phosphorescence, dynamical theory of, 259 Physical laboratory, first, 70 Pickering, 217 Polarised light, rotation of plane of, 220 Principia, Newton's, 195, 202 Ramsay, George Gilbert, Professor of Humanity, 11 Regnault, 29 Royal Society of Edinburgh, presidency of, 299 Royal Society of London, presidency of, 299 Rumford, Count, 103 Seebeck, 148 Signalling, theory of telegraphic, 264 Siphon recorder, 268, 270 Smith, Archibald, 275 Spectrum analysis, dynamical theory of, 84 Stokes, Sir George Gabriel, 24, 79, 80, 81, 85, 291, 294 Stoney, Dr. Johnstone, 262 Sun's heat, age of, 232 Tait, Peter Guthrie, 194 _et seq._