541

1. Upon the establishment or continuation of a laboratory by a city as provided in section five hundred forty of this chapter, all the powers and duties of the board of supervisors of a county in relation to laboratories provided in sections five hundred twenty and five hundred twenty-two of this chapter, shall devolve upon the common council or other authority exercising similar powers of such city. 2. The salaries of the director and other employees of the laboratory, and contracts to be made for, by or on behalf of the laboratory and appropriations for the acquisition of sites and buildings and for maintenance, shall all be under the control of the same officials as now have control of similar items and shall be governed by the same provisions of law.