Sec. 14. The said state highway bonds, fourth issue, to be Issued under the provisions of this act, shall bear date of January 1, 1921, and become due January 1, 1941. Both bonds and interest coupons herein authorized to be issued shall be payable at the office of the state treasurer at Boise, Idaho.
Sec. 15. The department of public works of the state of Idaho is hereby directed to apply the proceeds of the said Idaho state highway bonds, fourth issue, as follows, to wit: To the completion or construction of state roads or bridges in cooperation with counties and highway districts of the state of Idaho or the federal government or both, in such amounts as deemed proper by the department. 