It shall be the duty of the county health officer to examine all applicants for positions on the county police and to certify to the county personnel board the physical conditions of each of such applicants, and also when requested, to examine and certify to such board the physical conditions of all of the officers of the county police. For the additional services required of him by this chapter, such county health officer shall not receive additional compensation. (1939, ch. 730, § 22; 1943, ch. 449, § 799; Mont. Co. Code 1965, § 18-14; 1979 L.M.C., ch. 6, § 1.)