-2.-+ payment of the interest thereon in the respective years the amount as follows: Principal $ 1977 . 30,559.00 1978 . 33,692.00 1979 37,145.00 1980 40,953.00 1981 45,151.00 3. The Mayor and Treasurer are hereby authorized to do all necessary acts and things to carry out the intent of this by-law. 4. This By-law shall take effect on the date of its adoption by Council. 5. This by-law may be cited as the "Fire Hall Temporary Loan 4 By-law, 1976, No. 1445",