252 EAETHQUAKES ON THE PACIFIC COAST 



1896. September 1; Pinole, Contra Costa Connty. 



[At 1 o'clock p. m. the works of the California Powder Company 

 exploded. There were three separate explosions, the heaviest one 

 being the mixing-house with its 15,000 pounds of dynamite. This 

 explosion was not noticed at Mount Hamilton, nor did the seis- 

 mographs or barometers record any tremors.] 



1896. September lO; Santa Rosa; 3h. 45m. a. m. 



A sharp shock. The vibration was north and south. — S. F. Chronicle. 



1896. September 24; Mount Hamilton. 



5h. 25m. 30s. ± p. m. P. s. t. R. F. (III).— E. S. Holden. 



5h. 25m. 45s. p. m. P. s. t. R. F. (I). L. O. main building creaked, bitt 

 did not notice any particular motion. There was a slight mark 

 on the plate of the duplex seismograph. — C. D. P. 



1896. September 30; Descanso. 



— Cal. S. W. Service Bulletin. 



1896. October 19; Santa Rosa; about 6 a. m. 



Quite a severe earthquake shock. The vibrations were from north 

 to south, lasting about three seconds. No damage. — S. F. 

 Chronicle. 



1896. November 3; Mount Hamilton. 



tOh. 58ni. 44s. ± Is. a. m. In my office rattled stove, lamp-shade, 

 etc. Three or four short, sharp shocks, all within 1% second. — 

 W. W. Campbell. 



1896. November 11; Cahto. 



Two shocks of more than ordinary note were felt here at 2 o'clock 

 this morning. They shook crockery from shelving, stopped 

 clocks, etc., doing no material damage. The vibrations were from 

 east to west and the duration was about four seconds (VI). — 8. F. 

 Chronicle. 



1896. November 29; Mount Hamilton. 



llh. 3m. 37s. a. m. P. s. t. An irregular, slight shaking lasting 

 5s. or 6s. Not exactly like the vibrations of an earthquake, but 

 could find no other explanation, K. F. (I). I was in the 12-inch 

 dome at the time. No record on the seismographs. — C. D. P. 



1896. December 8; Mexico. 



A heavy earthquake occurred to-day at the various Pacific 

 ports of this republic, the first shock coming at 9.30 a. m. and the 

 second, an up and down and very alarming one, at 1.30 p. m., 

 and at 5 p. m. the third shock occurred. No casualties are re- 

 ported.— ;Sr. F. Chronicle, Dec. 9, 1896. 



1896. December 17; Santa Barbara. 



" A tidal wave, the largest in the history of Santa Barbara, washed 

 over the boulevard at 8 o'clock this morning, carrying back with 



