In English law. The chief law officer of the realm, be-iug created by letters patent, whose ofiice is to exhibit informations and prosecute for the crown iu matters' criminal, and to file bills iu the exchequer in any matter concerning the king’s revenue. State v. Cunningham. 83 wis. 90, 53 N. W. 35, 17 L. R. A. 145, 35 Am. St. Rep. 27