11.—(1) Envelopes addressed to postal voters shall be counted and forthwith delivered by the constituency returning officer to the nearest head post office, or such other office as may be arranged with the head postmaster, and the postmaster shall stamp with the post office date stamp a form of receipt to be presented by the constituency returning officer stating the number of envelopes so delivered, and shall immediately forward such envelopes for delivery to the persons to whom they are addressed.
(2) First class postage of all such envelopes and all covering envelopes shall be prepaid by the constituency returning officer.