Bengal Districts Act, 1864 1. Lieutenant-Governor may alter limits of existing zilas. The Bengal Districts Act, 1864 Bengal Act 4 of 1864 WB300 [20th April, 1864.] An Act to amend Act 21 of 1836. Preamble. - Whereas it is expedient to amend Act 21 of 1836; It is enacted as follows :- 1. Lieutenant-Governor may alter limits of existing zilas. - It shall be lawful for the Lieutenant-Governor [* * * *] from time to time to alter the limits of existing zilas in any part of the [States] [to which this Act extends].