Section 43. Besides the taxes imposed under the foregoing sections, a municipal committee, with the previous san

43. Besides the taxes imposed under the foregoing sections, a municipal committee, with the previous sanction of the Local Government, may, for the purpose of lighting the public streets throughout the municipality or any part thereof, or paying the principal or interest of any loan raised for the construction of works required for lighting those streets, impose, in manner prescribed by section 45, a tax, to be called the lighting-tax, upon buildings and lands situate within the municipality or that part thereof, as the case may be: Provided that in fixing the rate or amount of the tax regard shall be had to the principle that the total net proceeds thereof should not exceed the amount required for the said purpose.