EARTHQUAKES ON THE PACIFIC COAST 35 



1836. August; X. 



Pribyloff Islands, Alaska.— P. 



1836. June 9 nud lO; 



Severe shocks from Monterey northward. — H. H. B. 



1836. vm. 



An earthquake comparable with the shock of 1868, October 21, was 

 felt in the same region of country; great fissures were made in the 

 earth, and the shocks continued for a month. — B. Ms. 



1838. Jane and Jnly; VIII. 



Shocks at San Francisco, San Jose, Santa Clara, and Monterey, Cal. 

 — H. H. B. Very severe in the harbor of San Francisco. — "Verbal 

 account of Don Jose Thompson. 



1839. ?5 shortly after 12 m.; IX. 



Where Redwood City now is. Destructive. Adobe walls seven feet 

 thick were cracked from top to bottom. The earth was cracked 

 in many places, and one immense fissure extended from Lone 

 Mountain (?) to the Mission San Jose. — B. Ms. — San Francisco 

 Call, December 21, 1879. 



1839. ?; VIII. 



A very severe earthquake in San Francisco, Cal. — Annals of San Fran- 

 cisco. 



1840. January 16-18; IX. 



An earthquake and tidal wave at Santa Cruz. The church tower 

 overthrown. — H. H. B. 



1841. May 12; 9 p. m.; III. 



A very short, slight shock at Monterey, Cal. — Duflot de Mofras, 

 Exploration de VOregon. — R. M. 



1841. Jnly 3; 2h. 7m. p. m.; VII. 



A shock at Monterey, Cal. Felt at sea. — Duflot de Mofras, Explora- 

 tion de VOregon. — R. M. 



1841. 



Violent eruptions of Mt. Raynier, Oregon. — Perrey. [?] 



1841. Summer; III. 



Monterey, Cal. " The shocks of one hundred and twenty earth- 

 quakes were felt during two successive months of . . . sum- 

 mer. The average, however, of two earthquakes a day is not so 

 frightful as it looks, the shocks being seldom severe, and often 

 so slight as to escape the notice of the uninitiated stranger." — 

 Simpson's Jonrney Round the World, vol. I. p. 344. 



