INDEX. 



595 



Ellis, 508, 523 



Energy, actual, 425, 426 



dynamical, 425-427 



plutonic, 114-127 



potential, 425-427 



science of, 433 



sources of, in nature, 433- 



455 

 Engineering, civil and military, 



208-210 



mechanical, 209, 210 

 Equilibrium tide, 1 8 

 Erebus and Terror magnetic 



survey, 150 

 Erosion at equator, 90 

 Euler, 566-7 

 Evans, Capt, 152 

 Everett, 56, 57, 399 

 Examination and teaching, 502 



-505 

 Exchanges, theory of, 174 



Faraday, 158, 160, 161,423,449, 

 541-2, 547, 549 



Eaure, 439, 442-444, 452-454 



Fitzgerald, 545-6 



Flame, theory of, 1 76 



Fleeming, Jenkin, 165 



Foerster, 523 



Fortuitous concourse of atoms, 

 469 



Foueault, 160, 170-172 



Fox Talbot, 169, 179 



Frankland, 175-177, 183, 184 



Fraunhofer, 168, 169, 172, 181 



Freezing point lowered by pres- 

 sure, 466 



Frequency, definition of, 399 



Fresnel, 548 



Factional resistance, 13, 16, 19 



Galileo, 529 

 Gassiot, 143 



Gauss, 153, 159, 213, 214, 509 

 Geikie, Sir A., 87 

 Geological climate, 273 298 



dynamics, 73-131 



time, 10-79 

 Gilbert, 216, 510 

 Graham, 387 

 Gravitation, potential energy of, 



432 



Gregory, 138 

 Grove, 213, 429 



II 



H alley, 37, 219, 530-4 

 Hamilton, Sir William, 139, 



149 



Hansen, 41 



Ilarcourt, Vernon, 133-135 

 Harmonic analysis, 397 

 Harmonies, beats of imperfect, 



395-417 



Harmony, definition, 397 

 Haughton, Professor, 276 

 Heat and work, 420, 421, 457 

 animal, 562-3 

 convection of by water and 



ice, 285-288 

 air currents, 288-290 

 immateriality of, 421, 422 

 in voltaic battery, 562 

 lost by earth, 6-9 

 mechanical equivalent of, 



423, 424 

 motors, 465 

 natural, 435 



of chemical combination, 



124-6, 428-430, 435 



sun, 45, 53, 82, 83, 96- 



98,109,127-131,435 



440 



Heaviside, 545 

 Heer, 277 



Helium, discovery of, 184 

 Helmholtz, 35, 50, 129, 164, 



185, 395. 4H> 477 

 Henry, 544 



