AT SANTIAGO M: CHILI:. 



A PHI I., inn i. 



271 



* At 6A. 48m. 10s. A. M. of the 2d of April was awakened by a severe earthquake, which increased in violence until 6A. 48m. 28*. It continued 

 at its greatest strength until 6/t. 48m. 53s., when it began to diminish in violence ; but the movement of the earth lasted until 6A. 49m. 38., gradu 

 ally becoming less as the principal wave moved apparently to the southward. From that time until noon of the same day, there were repeated 

 slight shocks. Those noted are as follows : 



h. in. s. 

 A slight shock at 7 6 12, which lasted two seconds. 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



similar to two distinct and sharp thumps underneath. 



at 7 6 52, which lasted till 7A. 7m. 12*. 

 at 7 12 36, which lasted till 7A. 12m. 38s. 

 at 7 33 36, 

 at 7 33 38, 

 at 8 6 

 at 10 20 



at 11 34 36, till 11A. 34m. 43. 



The direction of the principal disturbing force was either towards the north or south. A chimney on the ridge of a house whose i 

 is north and south nearly was thrown down in a northeast direction, corresponding to the effect of the gravity which would carry it to the e**t, 

 and a movement in a southerly direction which would throw it northwardly. The cups and saucers on a table in the hotel were jolted from the 

 north to the south side, showing a movement in a southerly direction. 



h. in. t. 



At 8 31 p. M., a shock for one second. 

 At 8 34 p. M. . a shock lasting till Ok. 8m. 39*. 

 At 36 OP. M., a short, quick shock, with customary noise. 

 At 4 24 p. M., a slight shock. 

 At 5 55 Op. M., do. 



At 6 29 Op. M., do. 



At 7 1 92 p. M., a considerable shock, preceded some three or four seconds by a slight one, the noine distinctly heard to the northeast- 

 ward about 15*. before the shock. 

 At 10 34 3 p. M., a slight shock. 

 At 11 27 15 p. M., a slight shock, and without noise. 



While measuring wire intervals of the meridian circle on Santa Lucia from about 6A. 30m. till about 8A. 30m., it was observed that the mer- 

 cury was never still for more than flve or ten seconds at a time. A. M n K. 



k. m. *. 



f At 5 A. M., a slight shock, and without noise. (See vol. 1, pp. 108-115, 515, and 516.) 

 At 8 59 6 p. M., a premonitory shock. 

 At 8 59 12 P. M., a smart shock which lasted till 8A. 59m. 20*. 

 At 9 18 p. M., a premonitory shock. 



At 9 18 10 p. M., a smart shock which lasted till 9A. 18m. 94*. 

 The shock at 8A. 59m. was accompanied by a noise, but that at 9*. 18m. was not. A. M < R. 



