67-301. CLASSIFICATION OF OFFICERS. The public officers of this state are classified as follows: 1. Legislative. 2. Executive. 3. Judicial. 4. Ministerial officers and officers of the courts. But this classification is not to be construed as defining the legal powers of either class. [(67-301) R.S., sec. 110; reen. R.C. & C.L., sec. 31; C.S., sec. 72; I.C.A., sec. 65-301.]