Ontario, a W. county of New York, drained by the Honeoye outlet, a tributary of the Genesee, Canandaigua outlet, and Mud creek, tributaries of the Clyde; area, 606 sq. m.; pop. in 1870, 45,108. Its surface is hilly and broken toward the south, undulating toward the north, and the soil is generally very fertile. Several beautiful lakes lie in the county, among which are Canandaigua, Honeoye, Ca-nadice, and Hemlock. Seneca lake lies partly on the E. border. The New York Central and the Northern Central railroads traverse it. The chief productions in 1870 were 863,558 bushels of wheat, 727,661 of Indian corn, 898,-568 of oats, 557,084 of barley, 37,204 of buckwheat, 584,259 of potatoes, 1,288,820 lbs. of butter, 96,493 of cheese, 743,306 of wool, 605,-910 of hops, and 78,499 tons of hay. There were 13,324 horses, 11,789 milch cows, 10,657 other cattle, 131,485 sheep, and 12,076 swine; 11 manufactories of agricultural implements, 9 of brick, 27 of carriages and wagons, 7 of iron castings, 4 of tanned and 4 of curried leather, 8 of malt, 2 of woollen goods, 20 flour mills, 28 saw mills, 4 planing mills, and 2 breweries.