Provided that the extent of the said general supervision and control shall be such as may be prescribed by byelaws made under section 427.

Functions of several Municipal Authorities.- (1) The functions of the several municipal authorities shall be such as are prescribed in this Act. (2) Municipal Government of the city vests in the Corporation.- Except as otherwise expressly provided in this Act the Municipal Government of the city vests in the Corporation. (3) Special functions of the Commissioner.- Subject to the approval or sanction of the corporation or of the Standing Committee, whenever it is in this Act expressly sp directed and subject also to all other restrictions, limitations, and conditions imposed by this Act, the entire executive power for the purpose of carrying out the provisions of this Act vests in Commissioner who shall also- (a) perform all the duties imposed or conferred upon him by this Act; (b) prescribed the duties, and exercise supervision and control over the acts and proceedings of all municipal officers and servants other than the officers and servants of Corporation office and subject to the rules or byelaws for the time being in force, dispose of or questions relating to the services of the said officer and servants and their pay, privileges and allowances (c) on the occurrence of any accident of unforeseen event or on the threatened occurrence of any disaster, involving or likely to involve extensive damage to any property of Corporation or danger, to human and animal life, take such immediate action as the emergency shall appear to him to justify and require reporting forthwith to the Standing Committee or the Corporation, as the case may be, when he has done so, the action he has taken and his reasons for taking the same and the cost if any incurred or likely to be incurred inconsequence of such action and not covered by a current budget grant. (4) Municipal officers may be empowered to exercise the powers of Commissioners.-Any of the powers, duties of functions conferred or imposed upon or vested in the Principal Officer by this Act may be exercise, performed or discharged under the Principal Officer control and subject to his superintendence and to such conditions and limitations if any, as he may think with to prescribe, by any municipal officer whom the Principal officer may generally or specially empower in writing, in this behalf.