The boards of county commissioners of the several counties of this state are hereby authorized to contribute in the aid of work authorized by Kan. Stat. Ann. § 76-326, and amendments thereto, under the direction of the state geologist. Such boards are hereby authorized to make a tax levy for such purpose and to pay a portion of the principal and interest on bonds issued under the authority of Kan. Stat. Ann. § 12-1774, and amendments thereto, by cities located in the county.