Section 13.  Same; record; coupons receivable for dues to Town; exempt from Town tax.
   The bonds and their coupons when issued as herein provided shall be numbered and a record shall be kept of all bonds and when due. The interest coupons shall be received in payment of all taxes, fines, assessments, or debts due the town, and the bonds shall not be taxed by the town nor shall they be subject to any town tax. (Pr. Laws 1915, C. 189, Sec. 4)