38 EARTHQUAKES ON THE PACIFIC COAST 



1851. November 12; 7 p. m.; V. 



San Francisco, Cal. — Perrey. Severe. — B. Ms. 



1861. NoT-einber 13; 7 p. m. 



San Francisco, motion of the waters in the bay. — Perrey. 



1861. November 15; 2 a. m. 



San Francisco, Cal. — Perrey. 



1851. November 15; 10 p. m. 



San Francisco. — Perrey. Also, T. T. 



1861. November 26; 



Coast of California from + 37° to + 40° latitude, eleven shocks. — 

 Perrey. 



1861. December 2; 



A shock at Dovs^nieville, Sierra County, Cal. — J. B. T. — Perrey. 



1861. December 26; 7 and 8:10 p. m. 



Tvv^o light vibrations in San Francisco. — T. T. " One shock in the 

 morning, one at 20 minutes before 10 at night, and one at 35 

 minutes past 11." — B. Ms. Three shocks: " The first quite severe, 

 at about 3 o'clock (a. m. ?) ; next about 10 (p. m. ?) ; last about 

 noon." — B. Ms. — Alta, December 26, 1851. During the past tw^o 

 years the direction of the shocks has been invariably from north 

 to south. — B. Ms. — Alta, December 28, 1851. 



1851. December 30; 3 a. m. 



San Francisco. — Perrey. (See December 26.) 



1851. December 31; 3 a. m.; 9:35 a. m.; 11:40 a. m.? 



Three shocks at San Francisco. — Perrey. (See December 26.) 



1851. December 31; V. 



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



1852. April 12; mianigbt. 



San Diego, Cal.— Perrey. 



1852, October 26; 



Eleven shocks at San Simeon; an equal number at Los Angeles and 

 San Gabriel. Felt also at San Luis Obispo, San Diego, and Colo- 

 rado Eiver. During the next six days all the southern part of 

 California shaken at short intervals. — Perrey. (See November 26.) 



1852. November 9; VIII or IX? 



Violent shock at Fort Yuma. The shocks continued almost daily for 

 many months. The first shock threw down a portion of Chimney 

 Peak and opened fissures and cracks in the clay desert bordering 

 the Colorado. A small mud volcano vras found in an active state 



