Section 123. Restrictions on official referees

No  official referee
  continued in office and serving under this article,  as  amended,  shall
  during   his   continuance   in  office,  other  than  as  member  of  a
  constitutional convention, or the incumbent of a non-salaried office  in
  the  educational  system  of  the  state hold any other public office or
  trust,  elective  or  appointive,  practice  law,  act  as  attorney  or
  counsellor   in  any  court  of  this  state,  or  act  as  receiver  or
  commissioner, or unofficial referee in any court, but shall  devote  his
  whole  time  and  capacity  to the duties of his office as such official
  referee.