39 



pillars in the second story of the custom house have separated from 

 the ceiling above about half an inch, and are supposed to have settled 

 from the eflFects of the shock ; I much doubt the alleged cause of this 

 displacement, as the pillars below present no indication of similar dis- 

 turbance. This shock was felt at Oakland ten miles east of the city, 

 but was not felt at Stockton, Sacramento, or Marysville. It was evi- 

 dently confined to an area of ten or twelve miles. 



Earthquakes during 1859. 



Jan. 25th, 20^ 20™. — A heavy shock of earthquake was felt in 

 Trinity and Shasta Counties. It was felt at Weaverville, Shasta, and 

 Horsetown. 



April 4th, lo^. — Quite a severe shock was felt at San Jose. There 

 were several vibrations, apparently from north to south. 



August 10th, 22" 35". — A smart shock was felt in this city, (San 

 Francisco) . 



Sept. 26th, 6^ 10"". — A smart shock at San Francisco. 



Oct. 5th, 12" 18™. — A very smart shock at San Francisco. 



Nov. 27th, 19" 15™. — A Hght shock at San Francisco. 



Dec. 1st, 0" 50™. — A smart shock at San Francisco. Felt at Oak- 

 land and Benicia. 



Dec. 2d, 14" 10™. — Several successive shocks were felt at San Ber- 

 nardino ; several of them were quite heavy, causing much alarm. No 

 damage was done. 



Whole number of shocks during this year was eight. 



