To effectuate the purpose of Sections 31-17-27 through 31-17-43, the state bond retirement commission is hereby required to take cognizance of the maturity date of the full faith and credit bonds of the state issued and outstanding as of July 1, 1944, and shall invest the funds constituting the state bond retirement revolving fund in United States government securities having maturity dates that bear a reasonable relation to the maturity dates of the full faith and credit bonds of the state to be retired from funds constituting the said state bond retirement revolving fund.