1. The state treasurer, with the approval of said board of fund commissioners, is authorized to deposit or invest all of the moneys in the fourth state building fund in the manner now or hereafter provided in section 30.260. Any interest received on such deposits shall be credited to the fourth state building fund.
2. The state treasurer, with the approval of the board of fund commissioners, is authorized to deposit or invest all of the moneys in the fourth state building bond and interest fund in the manner now or hereafter provided in section 30.260. Interest received on such deposits shall be credited to the fourth state building bond and interest fund.