(1) the person whose births and deaths shall, in the first instance, be registrable under this Chapter are the following, namely:-

(a) in the territories to which this Act extends] the members of every race, sect or tribe to which the Indian Succession Act, 1865¹² (10 of 1865) applies, and in respect of which an order under section 332 of that Act is not for the time being in force, and all persons professing the Christian religion;

(2) But the State Government, by notification in the Official Gazette, may extend the operation of this Chapter to any other class of persons either generally or in any local area.