Section 234(a) in Police Regulations, Bengal , 1943
(a)The police may be called upon to perform, except within railway limits, the duty of collecting, registering and transmitting vital statistics in rural areas other than those (i) completely covered by union boards or (ii) covered entirely by chaukidari unions or partly by chaukidari unions and partly by union boards where all the presidents are willing to undertake the work without remuneration.