Alpine, an E. county of California, bounded N. E. by Nevada; area, 1,000 sq. m.; pop. in 1870, 685. The western portion is occupied by the Sierra Nevada range, including Carson's pass and Pyramid peak. It is rich in silver. In 1870 there were 57,105 sheep, producing 281,700 lbs. of wool. The other productions were small. There were 3 quartz mills, 8 saw mills, and 2 newspapers. Capital, Silver Mountain.