Section 147. Vacancies and removals

If a vacancy shall occur in the office
  of any member of the board otherwise than  by  expiration  of  term,  it
  shall  be  filled by the governor, by and with the advice and consent of
  the senate, for the unexpired term. The governor may remove the chairman
  or any member of the board for cause after giving  him  a  copy  of  the
  charges and an opportunity of being heard in person or by counsel on not
  less  than ten days' notice. If the chairman or a member of the board be
  removed the governor shall file with the department of state a statement
  of the cause of such removal.