352 RESOURCES OF CALIFORNIA. 



In October, 1855, two stone mortars, such as were used by 

 the Indians for grinding acorns and grass-seeds, were found 

 near Diamond Springs, El Dorado County, at a depth of one 

 hundred feet below the surface. 



In October, 1854, the skeletons of two men were found at 

 Rattlesnake Bar, fourteen feet below the surface, and under 

 ancient strata, which had apparently not been disturbed from 

 the time of their deposition. 



Unfortunately, these discoveries were nearly all made by 

 men ignorant of geology, and the evidence in many cases is 

 not so satisfactory as it might be. 



