The State Treasurer having by due authority of law invested certain funds which were turned over to him as a part of the Clemson bequest in Brown consols of this State and having been issued a certificate of State stock in a sum equal to the value of such Brown consols, bearing interest at the rate of six per cent per annum, payable semiannually, to the board of trustees of Clemson University, the same shall be held as a perpetual fund, the capital of which shall forever remain undiminished and the interest on which shall be used by such board of trustees for the uses of the university.