360 



INDEX. 



CEN 



Centrum, dete- m' nation of position 

 of, see origM.s 



Chaplin, W. H,, on the bracket 

 seismometer of, 27 



— on earthquakes and tlie posi- 

 tion of the moon, 252 



Coast line, on the movement of, 

 160 



Cocks, E., on earthquakes and 

 tides, 290 



Coseismic lines, definition of, 10 



Curves, on microseismic, 321 



Darwin, Charles, on the move- 

 ment of coast, lines, 160 



— George H., on earth tides, 285 



— on tidal loads, 291 



— on earth pulsation, 330 



— on the effect of fluctuations of 

 barometric pressure, 336 



— experiments at Cambridge, 310 

 Delauney, M. J., on the influence 



of the planets on earthquakes, 

 261 

 Diagonic, definition of, 11 

 Diastrophic, definition of, 11 

 Direction of motion, from instru- 

 mental records, 198 

 Distribution, on earthquake, 226 



— examples of, 231 

 Disturbance, on the propagation 



of, 50 

 Douglas, J., on South American 

 houses, 126 



Earth-particle, on the velocity 



and acceleration of, 79 

 Earthquake motion, nature of, as 



deduced from the feelings, 67 



— direction of, derived from in- 

 strumental records, 69 



— duration of, 71 



— period of vibration in, 74 



— examples of extent of, 75-77 



— absolute intensity of force in, 

 83 



— radiation of, 85 



— velocity of propagation of, 87 



FUG 



Eartliquake at Lisbon, velocity 



of propagation of, 88 

 Earthquakes, general examples of 



effects of, 142 



— geological changes produced 

 by, 161 



— hunting, 187 



— distribution of, 226 



— maps, 189 



— secondary, 248 



— table of, for nineteenth century, 

 259 



— on the course of, 277-281 



— and tides, 290 



— prediction of, 297-304 

 Elastic waves, nature of, 44 

 Emergence, angle of, 9 

 Energy, dissipation of, in earth- 

 quakes, 62 



— seismic, in relation to geologi- 

 cal time, 234 



table of, 240 



Epicentrum, definition of, 9 

 Euthutropic, definition of, 11 

 Evving, J. A., pendulum seismo- 

 graph of, 25 



— astatic pendulum of, 26, 



— bracket seismograph of, 26 



Falb, E., on the influence of the 

 sun and moon on earthquakes, 

 286 



Fissures, on the material dis- 

 charged from, 148 



— on the explanation of, 151 

 Focal cavity, definition of, 9 



— on the form of, 221 



Forbes, D., on an earthquake in 

 Mendoza, 151 



Frequency of earthquakes, 243 



Frere, Sir H. Bartle, on geologi- 

 cal changes produced by earth- 

 quake?, 161 



Fuchs, on sea waves, 176 



— on the movement of the seismic 

 centre, 233 



— on earthquakes and volcanic 

 outbursts, 271 



— on hot springs, 157 



