Hickman ,.I. A W. central county of Tennessee, drained by Duck and Piney rivers; area, 550 sq. m.; pop. in 1870, 9,856, of whom 1,471 were colored. The surface is uneven, and the soil rich and well watered. Iron ore is abundant. The chief productions in 1870 were 41,536 bushels of wheat, 514,554 of Indian corn, 34,202 of oats, 43,150 of peas and beans, 17,364 of Irish and 15,226 of sweet potatoes, 121,556 lbs. of butter, and 755 bales of cotton. There were 2,374 horses, 1,790 mules and asses, 2,600 milch cows, 4,438 other cattle, 6,927 sheep, and 23,793 swine; 1 manufactory of cotton goods, 2 flour mills, 5 tanneries, and 3 saw mills. Capital, Centreville. II. A S. W. county of Kentucky, touching Tennessee on the S. E., separated from Missouri by the Mississippi river, and drained by several small streams; area, 220 sq. m.; pop. in 1870, 8,453, of whom 1,635 were colored. The surface is gently undulating, and the soil consists of rich mould with a substratum of sand. The Mobile and Ohio railroad passes through it. The chief productions in 1870 were 48,190 bushels of wheat, 350,860 of Indian corn, 570,287 lbs. of tobacco, 10,416 of wool, 53,650 of butter, and 308 bales of cotton. There were 1,385 horses, 858 mules and asses, 3,871 cattle, 5,010 sheep, and 13,948 swine.