Hamilton, O., the county-seat of Butler County, is built on both sides of the Miami River. The city owns and operates its own gas and water works. It has thriving factories, which are operated by a system of hydraulics fed by the river, which is turned from its channel into an immense reservoir, while waterpower is also obtained from the canal. Many of these factories have been established in the past few years, and they produce paper, flour, woolen goods, agricultural implements, machinery, tools and iron. Four railroads connect the city with all parts of the country. The public schools occupy fine buildings and take high rank. Population 35,279.