Section 2: Constitution of the forces
The entire police-establishment under a State Government shall for the purposes of this Act, be deemed to be one police force, and shall be formally enrolled; and shall consist of such number of officers and men, and shall be constituted in such manner as shall from time to time be ordered by the State Government. Subject to the provisions of this Act the pay and all other conditions of service of members of the subordinate ranks of any police force shall be such as may-be determined by the State Government.
Source: official text of The Police Act, 1861 as published on India Code (PDF). All sections of the Police Act, 1861.