The county commission may, in its discretion, once in every 10 years cause the laws of the county to be codified, with supplements thereto once in every four years, such codification not to embrace any statute embodied in the Code of Alabama, nor any private act relating to persons or corporations, except town corporations and school districts. Every county officer shall, on his application, be furnished with a copy of such code, the same to be delivered to his successor in office.