368 



TRANSACTIONS OF THE 



former times, attracted so much attention that a city was built in almost 

 a day, near the very summit of the Sierra Nevada. The Meadow Lake 

 mines are idle now, and time alone will tell if the ledges there have gold 

 sufficient to cause mines to be made. Rough and Ready Township has 

 many gold-bearing quartz ledges in its eastern portion, while in the west- 

 ern part are valuable deposits of copper. 



The great gold gravel region of the county is in the townships of Bridge- 

 port, Bloomfield, Eureka, Little York, and Washington. These are of 

 immense extent, and of incalculable richness. These beds were worked 

 by the hydraulic process for the most part, and enormous values of gold 

 were washed out of them. The hydraulic process of working mines is now 

 under the ban of the law, but doubtless a way will be found for lawfully 

 taking the gold from those rich gravel beds. There are some gravel mines 

 in Nevada, Grass Valley, and Rough and Ready Townships, but they are 

 not extensive — excepting at Mooney Flat, in Rough and Ready, where is 

 the extension of the famous gravel leads of Timbuctoo, Smartsville, and 

 Sucker Flat. 



Rainfall at Grass Valley, Nevada County. 



The rainfall that goes to make up the following table for Nevada County 

 was taken at Grass Valley by Mr. Loutzenheiser, beginning with January, 

 1873, to date: 



* Up to March 1, 1888. 



Average Precipitation in Nevada County. 



