The returning officer shall make all his arrangements for the conduct of the election so as to ensure its completion, and the ascertainment of the result, on or before the fifteenth of April in each year; and on that day the candidates elected shall come into office, and until that day the members in whose room they are elected shall continue to hold office.

Provided at the first election of a local board for a district constituted after the passing of this Act may be held at any time mentioned in the order constituting the district, and the members shall come into office on the day appointed for their first meeting, but shall for the purposes of retirement be deemed to have come into office on' the fifteenth of April next following the commencement of the order.