EAETHQUAKES ON THE PACIFIC COAST 233 



1893. Angnst 9; San Rafael. 



This morning at 1.10 o'clock, two severe earthquake shocks were 

 felt. The vibrations were from east to west. The second shock 

 was the heaviest. 



1893. August 9; Healdsbnrg; Ih. lOni. a. m. 



A sharp shock, or rather three continuous shocks. The sky, which 

 was clear, was in a few minutes overcast with fog clouds — some- 

 thing not witnessed here for several weeks, although usual in 

 summer. 



1893. August 9; San Francisco. 



Yesterday morning the Catholic churches of this city celebrated 

 the feast of St. Emigdius. High mass was celebrated in the prin- 

 cipal places of worship in honor of the day, with the especial 

 object of obtaining the protection of St. Emigdius and his 

 prayers to Almighty God, asking for his protection against the 

 calamity of earthquakes, for he is patron against such disastrous 

 visitations. 



This observance with high mass was introduced by Archbishop 

 Alemany after the alarming earthquake w^hich visited this city 

 in 1868, and has been celebrated in most of the Catholic churches 

 in the United States since that time, and received the sanction 

 of the Pope. 



1893. August 12; Mills College. 



Prof. Josiah Keep sends a tracing of a slight but quite sharp dis- 

 turbance recorded on his seismograph at 12.50 p. m. The record 

 shows a displacement of the pen amounting to 5 nam. 



1893. August 12; Alameda. 



A verj' slight shock was felt about 12 m. Mr. Perrine's duplex 

 seismograph gives a tracing of but a single vibration. 



1893. August 14; Toutle River, Washington. 



Mr. Fred G. Plummer reports: " Earthquake at 5.07 a. m., N. 40° 

 W. — 11 miles from summit of Mount St. Helens. One sharp 

 shock vertical. Intensity IV. Distinct rumbling preceding for 

 four seconds, near at hand toward the mountain." At Green 

 Eiver Mines, Washington, IV, lateral, rumblings. — P. 



1893. August 16; Austin (IVev.); 12:30 a. m. 



Two shocks. 



1893. August 27; Cape Mendocino Ligbtbonse; 9b. S'tYzin. p. m. 



Clock pendulum nearly stopped (VI), but was again started by 

 the observer. 



1893. August 30; Candelaria (Nev.); 10 a. m. 



Dnration 3 sec, N. W. to S. E. 



