§ 703. Employment of counsel. With the written approval of the county
judge of a county in which an indictment has been found for a capital or
other crime which presents unusual difficulty upon the trial thereof,
the district attorney may employ counsel to assist him upon such trial.
Such approval shall be filed in the office of the county clerk. The
board of supervisors shall audit as other county charges a reasonable
compensation and the necessary expenses of such counsel as certified by
the presiding judge or justice.