Cavendish, Henry, 73, 74; Works of, edited by Maxwell, 87, 154, 155 Cavendish Laboratory, built and presented to University of Cambridge, 73, 74 Cay, Miss Frances, 11 Cayley Portrait Fund, lines to Committee, 86 Challis, Professor, 49 Charles’ Law, 124 Chemical Society, Maxwell’s lecture before, 80–82 Clausius, on kinetic theory of gases, 119, 129, 130, 137 Clerks of Penicuik, The, 9, 10 Colour Perception, 94 Colour Sensation, Young on, 97, 98; Sir D. Brewster on, 99 Colours, paper by Maxwell, on, 40, 41; Helmholtz on, 99 Conductors and Insulators, Distinction between, 173 Cookson, Dr., 61 Corsock, Maxwell buried at, 90 Cotes, 202 Coulomb, 154 Curves, investigated by Maxwell, 19 Daniell’s cells, 77 Democritus, 108 Demonstrator of Physics, W. Garnett appointed, 75 Description of Oval Curves, first paper by Maxwell, 19 Devonshire, Duke of, Cavendish Laboratory built by, 73, 74; Letter of Thanks from University of Cambridge, 74 Dewar, Miss K. M., her marriage to Maxwell, 51 Dickinson, Lowes; Portrait of Maxwell by, 90 Diffusion of gases, 128 Discs for colour experiments, 99–101 Droop, H. R., 57 Dynamical Theory of the Electro-magnetic Field, Maxwell on, 57, 177 Dynamical Theory of Gases, Maxwell on, 58, 134 Edinburgh Academy, Maxwell’s school-life at, 13–18 Edinburgh, Royal Society of, Maxwell at meetings of, 18 Edinburgh, University of, Maxwell at, 22 Elastic Spheres, 144 Electric Displacement, 218, 219, 220 Electrical Theories, 94, 154, 155 Electricity and Magnetism, Maxwell’s book on, 59, 77, 79, 147, 155, 156, 176, 180–201; papers by Lord Kelvin on, 161–2; Application of Mathematical Analysis to, paper by G. Green, 158 Electricity, Modern Views of, by Professor Lodge, 177 Electro-kinetic Momentum, 221 Electro-magnetic Field, Dynamical Theory of, Maxwell on, 57, 177 Electro-magnetic Induction, 157 Electro-magnetic Theory of Light, 174 Electro-tonic State, 164 Electrostatic Induction, Faraday on, 159 _Encyclopædia Britannica_, articles by Maxwell in, 80, 108, 146 Ether, labile, 220 Experimental Physics, foundation of Professorship at Cambridge, 66; Election of Maxwell, 68 Faraday on electrical science, 157; on electrostatic induction, 159 Faraday’s Lines of Force, paper by Maxwell on, 44, 45, 148–153 Fawcett, W. M., architect of Cavendish Laboratory, 73 Fitzgerald, Professor, 177, 211 Forbes, Professor J. D., 18, 44, 54; friendship with Maxwell, 19; paper on Theory of Glaciers, 19; resigns Professorship at Edinburgh, 54 Galvani, 155 Garnett, W., appointed Demonstrator of Physics at Cambridge, 75; Life of Maxwell by, 94 Gases, Molecular theory of, 57, 108; Waterston on general theory of, 118; Clausius on, 119; diffusion of, 128 Gauss’ Theory, 156 Gay Lussac’s Law, 117