Alameda, a W. county of California, on San Francisco bay; area, 820 sq. m.; pop. in 1870, 24,237, of whom 1,939 were Chinese. The San Francisco and Alameda, and the San Jose and Stockton railroads run through the county. Gold and some other minerals are found in small quantities. The principal productions in 1870 were 854,888 bushels of wheat, 668,975 of barley, 69,080 of oats, 114,053 of potatoes, 138,975 lbs. of wool, 198,910 of butter, and 23,464 tons of hay. There were 6 newspapers published, of which 3 were dailies. The scenery of this county is very attractive. The warm springs, in a little valley among the foot hills of the Coast range, are much frequented for their medicinal properties, the water containing sulphur, lime, magnesia, and iron, in various proportions. Capital, San Leandro.