(a) The Board of Corrections may sell any, or all, of the lands now used by the state in working convicts for cash or on credit, as may seem best, and purchase lands superior in quality to be used by the board in working convicts.
(b) So much of the funds earned by the board as may be necessary is appropriated and authorized to be paid for such lands as may be purchased under subsection (a) of this section, and the Comptroller, upon the application of the board, shall draw his warrant for such sum, or sums, as may be necessary for such purchase of such lands and the payment thereof.