§ 131. Duties of commissioner. The commissioner of public safety shall
have cognizance, jurisdiction, supervision and control of the
government, administration, disposition and discipline of the police
department, fire department, buildings department and health department,
and of the officers and members of said departments, and shall possess
and exercise fully and exclusively all powers and perform all duties
pertaining to the government, maintenance and direction of said
departments, and the apparatus and property thereof and buildings
furnished therefor, and shall have the general direction and supervision
of the expenditure of all moneys appropriated to said departments. He
shall possess such other powers and perform such other duties as may be
prescribed by the law or by ordinance of the common council.