The state treasurer may receive from the United States any money that may have been received, or that may hereafter be received, for any of the swamp lands donated to this state, and the department may take an assignment of all bounty land warrants received for any swamp lands sold in this state since the act of congress approved September 28, 1850, and release the interest of the state in any lands sold or entered with the warrants to purchasers or their assigns.