"When the borough was incorporated into a city [March 1816], the act incorporating it authorized the authorities to establish a police force, but there was none established for some years afterwards. The act limited the city taxation to five mills on a dollar, and the corporation could scarcely have paid a police force, even if one had been required. The city authorities did, however, pass an ordinance on August 24, 1816, establishing a night watchman, but soon found they had no money with which to pay him. They accordingly repealed the ordinance and for some years the city slept in darkness without the benefit of police protection." Boucher's Century and a half of Pittsburg.