362 



INDEX. 



MA.L 



Jlallet on tlie temperature of focal 



cavity, 84 

 Malvasia, M. le Conte, on earth 



tremors, 316 

 Martin, D. S., on the New England 



earthquake of 1874, 142 

 Meizoseismic area, clefinitionof, 10 

 Melzi, on curves of microseismic 



motion, 322 

 Meteors, on earthquakes and, 260 

 Microseismic movements, on cause 



of, 324 

 Milne, D., on the Lisbon earth- 

 quake, 87 

 — on earthquake synchronism,247 

 Mitchell, on earthquake motion, 42 

 Moon, effect of, on earthquakes, 



251, 285 

 Mountains, on the swing of, 135 



Naumann, E., on meteors and 



earthquakes, 261 

 — on sun spots and earthquakes, 



263 



Ocean, on disturbances in, 163- 



186 

 Origin, definition of, 9 



— on the determination of, 187 



— position of, deduced from di- 

 rection of motion, 192 



from destruction of build- 

 ings, 194 



from rotation of bodies, 195 



from time of occurrence, 199 



examples of methods of cal- 

 culating, 200-212 

 Oscillations, on earth, 344 

 Overturning moment, on the area 

 of greatest, 63 



Palmer, Col. H. S., on earth tre- 

 mors, 307 

 Palmieri, on clock stopping, 36, 62 

 Paul, H. M., on earth tremors, 308 

 Perrey, A., on the influence of the 

 moon on earthquakes, 251 



SEA 



Perrey on the periodicity of earth- 

 quakes, 8 



Perry, J., on p-^sition of openings 

 in walls. 111 



Physicists, on the interest o£ earth- 

 quakes to, 2 



Planets, influence of, on earth- 

 quakes, 260 



Plantamour, M., on earth pulsa- 

 tions, 328 



Pleistoseists, definition of, 10 



Poly, M. A., on earthquakes and 

 sun spots, 263 



— on earthquakes and revolving 

 storms, 294 



Prost, M. le Baron, on earth tre- 

 mors, 316 



Pulsation, on earth, 4, 326-343 



Kecoeds, on receivers of, 33 

 Kivers, on disturbances in, 154 

 Kockwood, Prof., on Ameiican 



earthquakes, 6 

 Eonaldson, T., on San Francisco 



houses, 129 

 Rossi, M. S. di, on an eruption of 



gas in the Tiber, 153 



— aurora and earthquakes, 264 



— earth tremors, 317, 320 



— earth oscillations, 346 



— earth pulsations, 327 



— microseismograph of, 318 



— microphonic observations of, 

 319, 323 



— normal tromometer of, 317 



Schmidt, on the influence of 

 barometric pressure on earth- 

 quakes, 267 



Sea waves, on nature of, 165 



— on cause of, 171 



— seldom produced by earth- 

 quakes which originate inland, 

 175 



— on velocity of propagation of, 

 177 



— examples of, 179 



Seasons, frequency of earthquakes 

 at different, 254 



