56 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



1906. May 4; Campbell. 



Lick Observatory; 5:25 a. m. R.-F. IT. Duration 5 seconds. Two 

 distinct principal shocks one-half second apart, 3 seconds after 

 beginning; direction north to south (?). No vertical vibration felt; 

 no sound heard. — J. G. Maddrill. 



San Francisco; 5:32 a. ni. Feeble sliock. — A. G. McAdie. 



San Francisco; 10:29:3(1 a. m. Sharp jar. — A. G. McAdie. 



1906. May 5; Oakland. Chabot Observatory; 10:28 a. m. 



Xapa; 10:30 a. ni. — W. H. Martin. 



San Francisco; sharp jar, 10:29:30 a. m. — A. G. McAdie. 



Lick Observatory; 10:30:05 a. ni. Duration 1 second, very faint. — 

 Dr. Campbell. 



1906. May 6; San Francisco; slight shock, 7:29 a. ni. and again at 

 8:59:20; last one double wave and felt like a push, then mure 

 waves. — A. G. McAdie. 



Blocksburg. Ukiali. 



1906. May 7; San Francisco; several light tremors during tiie night and 

 early morning. Shock at 5:07 a. m.. anotlier sharp shock at 

 4:17:10 p. m.— A. G. McAdie. 



1906. May 8; San I'Vanc-isco; 12:12 p. m. and 11:42 p. m. Sharp. — A. (!. 

 McAdie. 



Campbell, Salinas. 



1906. May 9; San I'rancisco; 5:20 a. m. — A. G. McAdie. 



Salinas. 



Ferndale; 9:30 p. m. Slight shock of 3 seconds' duration. — ,1. A. 

 Shaw, C. E. 



1906. May 9; Fureka; slight shock aboiit 7:25 p. ni., lasting several seconds. 

 Vilirations south to north. Shook windows. 



1906. May 10; Blocksburg, Zenia, Laurel, Montague. 



San Francisco; 12:15 a. m. — A. G. McAdie. 



Eureka; slight shock 6:59 a. m. Sudden jolt; duration 4 seconds. 

 Vibrations south to north. 



Ferndale; 6:55 a. m. Slight shock; 3 seconds. — J. A. Shaw, C. E. 



1906. May 11; Oakland, Chabot Observatory.; 1:27:46 p. m. 



¥apa; 1:30 p. m. and 3:30 p. m. — W. H. Martin. 



San Francisco; 1:30:49 p. m. Heavy shock, lasting 3 seconds. — 

 A. G. McAdie. 



