EARTHQUAKES ON THE PACIFIC COAST 37 



1850. January 10; llh.; 21i. a. iii. ? p. m.? 



San Francisco, three shocks. — Perrey. 



1850. February 15; 



Several shocks, San Francisco, Cal. — Perrey. 



1850. March 21; III. 



A light shock in San Jose, Cal. — J. B. T. — Perrey. 



1850. May 13; 



San Francisco and San Jose; also slight eruption of Mauna Loa. — 

 J. B. T. Perrey says: "In March and then May 12 and 13, six 

 shocks In San Jose and San Francisco during eruption of IMauna 

 Loa." 



1850. June 28; III. 



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



1850. August 4; V. 



Stockton and Sacramento, smart shocks. — J. B. T. — Perrey. 



1850. August 15; 



San Diego, Cal., and on the Gila. — Perrey. 



1850. September 14; V. 



Smart shock in San Francisco and San Jose. — J. B. T. — Perrey. 



1851. March; 



Several shocks in this month in California.^ — Perrey. 



1851. April; 



Shocks in California during April. — Perrey. 



1851. May 13; 



San Francisco and Salinas. — Perrey. 



1851. May 15; 8:10 a. m.; VII. 



San Francisco.— T. T.— J. B. T.— 8.20 a. m.— Perrey. Coincident 

 with an eruption of Mauna Loa. Severe shock, lasting about half 

 a minute, felt by shipping in the harbor. Bottles were thrown 

 from shelves to the floor. — B. Ms. Perrey says three shocks, in 

 Meni. Conr., vol. 8, p. 28. 



1851. May 17; III. 



A slight shock in San Francisco, Cal. — J. B. T. — Perrey. 



1851. May 28; III. 



A slight shock on the Salinas, Cal. — J. B. T. — Perrey. 



1851. June 13; V. 



Smart shock in San Francisco, San Luis Obispo, and San Fernando, 

 Cal.— J. B. T.— Perrey. 



