INDEX

direction, 69 Dirichlet, 213 dispersion, 141 displacement, 73, 77, 247, 256 distance, 59, 292 distributivity, 36 Du Bois-Reymond, 50 earth, rotation of, 326, 353 eclipse, 326 electricity, 174 electrified bodies, 117 electrodynamic attraction, 308 induction, 188 mass, 311 electrodynamics, 184, 282 electromagnetic theory of light, 301 electrons, 316, 492-4, 505-8, 510, 512-4 elephant, 217, 436 ellipse, 215 Emerson, 203 empiricism, 86, 271 Epimenides, 478-9 equation of Laplace, 283 Erdély, 203 errors, accidental, 171, 402 law of, 119