EARTHQUAKES ON THE PACIFIC COAST 161 



1891. September 13; Cedar City, Utali; 8:48 p. m. (C. Mnlbolland). 



" Shock heavy and accompanied by a sound like that of a heavily 

 loaded v\^agon passing over a street paved with granite blocks. 

 Its duration was brief, and there was but one shock." 



1891. September 16; Salem, Oregron; S:30 p. m. 



The shock was brief and distinct, and was followed by a wave-like 

 motion lasting several seconds. It was felt in all large buildings; 

 windows rattled. 



1891. September 31; Port Angeles, Wash. 



Reports differ as to time, some claiming- that the shock occurred at 

 4.10 a. m., others at 5 a. m. It is possible there were two distinct 

 shocks. The direction of vibration was from northwest to south- 

 east. Many people were awakened fromi sleep. Houses trem- 

 bled and chinaware rattled (VI). 



Port Townsend: shock felt shortly after 4 o'clock a. m. Dishes rat- 

 tled and sleeping people were awakened (VI). 



1891. September 33; Victoria, B, C; 3:40 a, m. 



Sharp shock felt all over city; lasted about seven seconds. 



1891. September 33; Healdsbnrg: 1:30 p. m. 



"Very severe and long-continued shock; one of the most severe 

 ever felt in this vicinity." 



1891. October 3; Mount Hamilton. 



Prof. Barnard reports " from one and one-half to two seconds' 

 duration. A very decided shock. Gradually increased in inten- 

 sity. 7.19.55 P. S. T. end of shock." Prof. Holden gives the time 

 as 7.19.55. Intensity II on Rossi-Forel scale. No record on seis- 

 mometers. 



1891. October 11. 



Felt generally over the central portion of the State. Following 

 are newspaper accounts: 



San Francisco: a slight earthquake shock was felt throughout the 

 city last night. It seemed like the heavy, noisy rumble of a cart, 

 and was perceptibly felt in every part of the town. Prof. David- 

 son was at work in his observatory when it occurred. The pier 

 upon which his instrument is placed was not thrown out of level 

 in the slightest degree. The earthquake lasted for thirteen sec- 

 onds, beginning at twentj^-seven minutes and thirty-two seconds 

 after ten o'clock and ending at twenty-seven minutes and forty- 

 five seconds after 10 o'clock. An unusual feature of the shock 

 was that it began light and gradually increased until it w^as 

 greatest during the last three seconds. The direction was south- 

 east to east-southeast. 

 11 



