﻿C. G. Boekwood, Jr. — American Earthquakes. 19 



April 29. — 4 h 15™, three very light shocks. 



May 3. — 15 h 40 m , very loog and strong shock. 



May 5. — l7 b 15 m , light shock. 



May 8. — 18 h 10 m , feeble shock. 19 h 44 m , very strong and ver- 

 tical shock. 



May 13. — 3 h 45 m , a very strong and very prolonged shock. 



May 14. — 6 h 30 m , very long trembling without great shock. 



July 4. — 4 h 20 m , at Ponso Alegre, Brazil, a village about 200 

 miles west of Rio Janeiro, a shock from north to south of some 

 seconds duration. 



July 6. — 8 h 15 m , at Valparaiso, a strong short shock preceded 

 by a rumbling. 



July 9. — h 15 m , a very long shock, not very strong. 



July 15. — 12 h , two short but rather strong shocks. 



July 18. — 5 h , at Nicaragua, a strong shock; also at 8 h with 

 subterranean noise. 



July 18. — 22 h 30 m , a very long continuous shock lasting about 

 one minute at Valparaiso. 



July 19. — 1 h and 8 h , shocks at Nicaragua. 



July 29. — 6 h , a shock at Nicaragua. 



Aug. 15. — A shock was felt at sea on the ship " Charles Dennis " 

 in lat. 17° N. long. 75' W. This position is in the Caribbean 

 Sea about 100 miles southeast of Jamaica. 



Sept. 25. — 16 h 6 m , at Iquique, Peru, a strong and prolonged 

 earthquake, south to north, duration 35 to 40 seconds. The bells 

 in the cathedral were rung and the cross had a decided motion. 



Oct. 6. — h 45 m , at Valparaiso, a very long and very strong 

 shock somewhat dangerous. 



Oct. — . — Several shocks at the end of October. 



Nov. 6. — Capt. James Cooper of the ship " Struan," reports 

 two shocks (IV) direction southeast to northwest, duration thirty 

 seconds and twenty seconds respectively, with an interval of about 

 one minute between them, in lat. 4° 17' N.; long. 79° 40' W., 

 which is in the Pacific Ocean, about 100 miles from the coast of 

 Colombia. This was probably connected with the earthquake on 

 this date in Colombia, mentioned in the last " Notes." (Am. 

 Jour. Sc. xxix, 435.) — U. 8. Weath. Rev. 



Nov. — . — At Valparaiso, " numerous shocks all the month of 

 November." 



Princeton, N. J., April 13, 1886. 



