EARTHQUAKES ON THE PACIFIC COAST 59 



1906. June 16; Peiichlaiul. 



Ferndale; 4:50 p. m. and 11:50 p. m. Two very ligbt shocks.— J. A. 

 Shaw, C. E. 



1906. June 18; Fort Boss. 



1906. June 20; Ferndale; 8:10 a. m. A^ery light.— J. A. Shaw. 



1906. June 22; Berkeley; 11:51:03 p. ni.. 11:51:10 p. m.— A. O. Leusehner. 

 San Francisco; 6:07 a. m. — A. G. McAdie. 

 Mt. Tamalpais, Kentfield. 



1906. June 25; Ferndale; 9:16 a. m. Light shock of about 6 seconds dura- 

 tion.— J. A. Shaw, C. E. 



1906. June 26; Napa, Peachland. 



1906. June 27; Ft. Boss. 



1906. June 28; Peachland. 



1906. June 30; Upper Mattole. Mr. W. H. Eoscoe states that since the 

 18th of April there have been at least one hundred shocks. 



1906. July 1; Mt. Tanialpais. 



1906. July 2; Fort Bragg; 5:45 a. ni. 



1906. July 4; Lick Observatory; 5:.'59 a. m.— E. A. F. 



San Francisco; 1:15:30 p. ni. Single swing. — A. G. McAdie. 

 Salinas, 5:45 a. m.; Campbell, 5:45 a. m. 



1906. July 6; Lick Observatory; two light shocks, 10:32 a. m. Three 



vibrations felt; duration 1 second. 10:55 p. m., light east to 



west. — Professor Aitken. 

 Berkeley; Oniori seismograph at Students' Observatory, recorded the 



shock at 10:52:15 ±2 seconds, p. m., and again at 10:58 p. m. 



Salinas, 10:52 p. m. 

 Los Banos. 

 San Luis Obispo. 



1906. July 9; Eureka; 10 p. m., 11:37 p. m. 



Ferndale; 11:40 p. m. Very light.— J. A. Shaw, C. E. 



1906. July 12; San Francisco; 5:38 a. m. (?)— A. G. McAdie. 

 Mt. Tanialpais. 



1906. July 13; Sierra Madre; 5:20 a. m. Newhall 5:35 a. m. 



Los Angeles; moderate shock felt at 5:30 a. m.— U. S. Weather 

 Bureau. 



