EARTHQUAKES ON THE PACIFIC COAST 39 



about forty miles southwest of the post.— Report of Exp, for 

 Pacific Eailroad, vol. V., p. 115. See Hittell's Resources, p. 44. 



1862. November 20; 



In Southern California, beginning of a series of thirty-two shocks. — 

 Perrey. 



1852. November 22; 11 p. m.} VIII. 



Severe shock eight miles southeast of San Francisco. Next morn- 

 ing a fissure half a mile wide and three hundred yards long was 

 discovered, through which the waters of Lake Merced were flow- 

 ing to the sea. — B. Ms. — Alta, November 27, 1852; also November 28. 



1862. November 23; a little before midnigrbt. 



Shock in California, accompanied by thunder and lightning. — Perrey. 



1862. November 24; 



San Francisco, Cal. Perrey says the waters of Lake Merced disap- 

 peared. (See November 22.) 



1862. November 26; (October 26?) 



Eleven strong shocks at San Simeon, Los Angeles, and San Gabriel, 

 Cal. — J. B. T. — Perrey says November 20 was the beginning of a 

 series of thirty-two shocks in Southern California. 



1862. November 27-30; IX. 



Continued shocks disturbing an area of over three hundred miles 

 square, extending east from San Luis Obispo to the Colorado 

 River, and north to San Diego. — J. B. T. The shocks opened fis- 

 sures at least thirty miles long in Lockwood Valley. — Verbal 

 account of J. De B. Shorb, Esq. 



1862. November 29; about noon; IX. 



San Diego. Shock lasted about two minutes. " The earth seemed 

 to vibrate to and fro some five or six inches." This shock was 

 followed by lighter ones about sunrise, for several days. — B. Ms. 



1862. November 29; 12:20 p. m. 



Fort Yuma and San Diego. — Perrey. 



1862. December 5; about 11 p. m. 



Fort Yuma. — Perrey. 



1852. December 17; V. 



Two smart shocks at San Luis Obispo, Cal. — J. B. T. — Perrey. 



1862. December; 



During the month of December the southern and middle portions 

 of California were much disturbed, and the effects were felt as 

 far north as the thirty-seventh parallel. The shocks continued 

 into the month of January, and were noticed until the fifth of this 

 month on the San Joaquin. — J. B. T. — Perrey. 



