“ It has large iron interests, railroad car-shops, iron-works, machine-shops, stove, furnace, and range works, rolling-mills, drill-works, knitting and silk mills, and an overall factory. A national powder depot has been established five miles from Dover. The town government, under a charter amended in 1875, is vested in a mayor, biennially elected, a recorder, aldermen, and councilmen, who constitute a unicameral municipal council. ”