4. (1) The enactments specified in the schedule, to the extent and with the modifications therein set forth and so far as they are not inconsistent with this Regulation or the rules for the time being in force thereunder, are hereby declared to be in force in the Chittagong Hill-tracts.

(2)No other enactment heretofore or hereafter passed shall be deemed to apply in the Chittagong Hill-tracts:

Provided that the ¹[Government] may, by notification in the Official Gazette,-

       (a) declare that any other enactment shall apply in the said tracts, either wholly or to the extent or with the modifications which may be set forth in the notification; or

        (b) declare that any enactment which is specified in the schedule, or which has been declared to apply by a notification under clause (a) of this sub-section, shall cease to apply in the said tracts :

    Provided further that no such declaration shall be after the commencement of Part III of the Government of India Act, 1935.