52 EAKTHQUAKES ON THE PACIFIC COAST 



1857. Decemlier 34; 5:40 a. in.? p. in.? 



Four shocks; S. F., Cal. — Perrey. 



1S57. December 30; 5;40 a. in. 



S. F., Cal.— Perrey. 



« 



1857. 



" Accounts from Fort Tejoii report frequent shocks in that section 

 of the country." Dr. Trask does not mention them in his notes 

 on earthquakes in California during- 1857. — Perrey. 



1S5S. January 1 or 2; 



San Francisco. — Perrey. 



1858. January 13; 9 p. m. 



S. F., Cal.— S. F. D. 



1.S58. February 10; V. 



Smart shock at Kanaka Flat, Sierra County, Cal. — J. B. T. 



1858. February 15; 4h. 20m.; IV. 



A light shock in San Francisco, and also in San Mateo County, Cal. 

 J. B. T.— Perrey. 



1858. August 18; 10:45 p. m.; VI. \ 



Two shocks, first light, second heavy enough to waken sleepers, 

 Sonoma County. — B. Ms. 10.55 p. m. — S^. F. Director!/. — Sacramento 

 Union, August 23, 1858. 10.55 and 10.58 p. m"., S. F., Cal.— T. T. 

 " No shock so severe as this in S. F. since February 15, 1856." — 

 B. Ms. 



1858. August 19; 221i. lOm.; III. 



A light shock in San Francisco. — J. B. T. 



1858. September 2; V. 



Smart shock at Santa Barbara, Cal. — J. B. T. 



1858. September 3; Ob. 40m.; V. 



Strong shock at San Jose and Santa Cruz, Cal. — J. B. T. — Perrey. 



18.-8. September 12; 19h, 40in.; V. 



Smart shock at San Francisco, Cal. — J. B. T. Lasting 15 seconds. — 

 Perrey. 



1858. September 26; lb. 26in. . 



A light shock in San Francisco. — J. B. T. — Perrey. 



1858. September ?; 



San Jose and elsewhere. In San Jose more violent than the shock 

 of January 9, 1857. — B. Ms. — Sacramento Union, September 20, 1858. 



