INDEX. 



3GI 



FUM 



Fumaroles, the effect of earth- 

 quakes on, 156 



MAL 



Isoseisniic circles, definition of, 10 

 — areas, definition of, 10 



Geinitz, Dr., on sea waves, 182 

 Geologists, on the interest of seis- 

 mology to, 2 

 Gray, T., astatic pendulum of, 26 



— bracket seismometer of, 27 



— conical pendulum of, 29 



— dead heat pendulum of, 22 



— on the rotation of bodies, 106 



— rolling spheres and cylinders 

 of, 29 



— torsion pendulum seismometer 

 of, 25 



— vertical motion seismometers 

 of, 32, 33 



— and Milne, seismograph of, 38 



Hattori, I., on the large earth- 

 quakes of Japan, 244 



Haughton, Prof., list of active 

 volcanoes of, 227 



— method of finding earthquake 

 origins of, 209 



Hills, on the want of support on 

 the face of, 136 



Hofer, on an earthquake at Bel- 

 luno, 225 



Hoffman, F., on the barometer 

 and earthquakes, 267 



Hooke, on earthquake motion, 42 



Hopkins, on the thickness of the 

 earth's crust, 284 



Humboldt, on meteors and earth- 

 quakes, 261 



— on the barometer and earth- 

 quakes, 267 



— on volcanoes and earthquakes, 

 279 



Imagination, effect of earth- 

 quakes on the, 2 



Instruments, direction of motion 

 derived from, 198 



Intensity, on earthquake, 51, 71 



— seismic curve of, for Kioto, 242 



Kluge, on sea waves, 175 



— on earthquake frequency, 246 



— on simultaneous earthquakes, 

 248 



— on earthquakes and sun spots, 

 263 



— on earth pulsations, 339 

 Kreil, pendulum seismometer of, 



25 



Lakes, on disturbances in, 154 

 Land, effect of earthquakes on, 

 146-162 



— on the reason of movements of, 

 162 



— on cracks and fissures formed 

 in, 146 



Level, on the use of for earth pul- 

 sations, 328 

 Literature, on seismic, 6 



— on Japanese earthquake, 7 



Mallet, K., on area of disturb- 

 ance as a test of seismic energy, 

 78 



— on clock stopping, 36 



— list of works on earthquakes of, 

 5 



— curve of seismic energy of, 238 



— definition of earthquake of, 43 



— on earthquake frequency, 243 



— on the influence of the heavenly 

 bodies on earthquakes, 253 



— on maximum depth of origin, 

 218 



— on pendulum seismometers, 20 



— projection seismometer of, 17 



— on the Neapolitan earthquake, 

 69, 77, 83, 97, 103, 132, 142, 218, 

 280 



— on sea waves, 170 



— on the swing of mountains, 135 



— on propagation from a fissure, 

 217 



