EAKTHQUAKES ON THE PACIFIC COAST 



11 



Tables of the Numbek of Eakthquakes which are Kecorded 

 IN EACH Month of each of the Years 1850-1887, in Cali- 

 fornia, Washington and Oregon. 



In the three following tables I have counted the days in each 

 month of each year on which shocks (supposed to be different) have 

 occurred. For example, a shock felt at a given hour at San Fran- 

 cisco and at Oakland is counted as one; but shocks at different 

 places, as San Diego and San Francisco, on the same day, are 

 counted separately when they are not Icnown to be parts of the 

 same phenomenon. 



Table (A) of the Number of Earthquakes which are Recorded in 

 California, Oregon, etc., in the Years 1850-1887. 



