INDEX. 



459 



LANGLEY, 318, 321 



Laplace, 5, 6, 407 



Latimer Clark, 85 



Light, 281-295, 300-348 

 "photographer's," 319 

 polarisation of, 198-204, 



329-335 



propagation of, 300-302, 309- 



312 

 refrangibility of, 180-195, 



198 note 

 speeds of vibrations in, 281, 



282, 313 320, 325, 326 

 velocity of, 342, 343 

 wave-lengths of, 153-155. 

 312, 313, 319, 324, 

 325, 335-342 

 measurement of, 107- 



no, 336-342 

 wave theory of, 300 348 

 Logic, 285-287 

 Luminiferous ether, 326-329 



MAGNETISM, 81, 82 

 Malebranche on vortices, 218, 



219 



Mathematics, 277, 278 

 Matter, coarse-grainedness of, 

 217 



diffusion of, 221 note 



heaviness of, I, 2 



kinetic theory of, 218-252 

 Metals, transparency of, 178- 



180 



Meteorites, 417-420 

 Metrical system, 304, 305 

 Mho-ohm, 126-131, 

 Moon-heat, 320, 321 



NEBULAR theory of the sun, 



403-415 

 Neumann, 6 

 Newton, 323 

 Newtonian law of attraction, 1-4, 



59-63 



Newton's rings, 158-161 

 Nicol prism, 330, 331 



OERSTED, 43J.432 



Ohm, the, 85-91, 123-126, 133- 



136, 445-447 

 Oscillations, electric, 113-116 



PARIS International Conference 

 on electrical units, 86 



Perry, Prof. J., 33 



Phosphorescence, 207-213, 283 

 dynamical model of, 204-207 



Polarisation of light, 198-204, 



329-335 



plane of, 333, 346 

 Practical applications of science, 

 79, 80 



QUINCKE, 8 



RADIATION from sun, 354, 367 

 Forbes's estimates, 389 

 Langley's estimates, 389 

 Pouillet's estimates, 356. 



367, 389 

 Rayleigh, correction of the B. A. 



ohm, 89-91 



Refractive indices, 192 

 Reid, Dr. Thomas, on the senses, 



255, 256, 295, 296 

 Reinold, 8 

 "Repulsive motion," Davy's, 



223, 228, 381, 391-396 

 Robinson, 423 

 Riicker, 8 

 Rumford, 222 



SENSE, electric, 262, 263 

 Sense of, magnetism, 258-262 



force, 257, 295-299 



hearing, 264-281 



heat, 256, 257, 292-294 



light, 292-294 



smell, 290-292 



taste, 290-292 



Senses, "Six Gateways of Know- 

 ledge," 253-299 



Siemen's unit of resistance, 87, 

 88 



