Section 152. Meetings of the board

1. The board of supervisors shall, in
  addition to the meeting to organize the board, hold regular meetings  at
  stated intervals.
    2.  Special  meetings  shall  be  held at the call of the clerk of the
  board upon direction of the chairman, or at the call of the clerk of the
  board upon direction of the vice-chairman provided that upon  convening,
  a  majority of the members of the board pass a resolution ratifying such
  call or upon written request signed by a majority of the members of  the
  board.  Notice  in  writing  stating  the time, place and purpose of the
  special meeting shall be served personally or by mail upon  each  member
  by  the  clerk  of  the board at least forty-eight hours before the date
  fixed for holding the meeting or a member may waive the service  of  the
  notice  for  such  meeting  by  a  writing  signed by him. Only business
  specified in the notice thereof may be transacted at a special meeting.
    3. Any meeting of the board of supervisors may be adjourned from  time
  to time. All meetings of the board shall be public.
    4.  No  action  of such board changing the place of meeting where such
  board has regularly met to any other city, town or village in the county
  shall be valid unless approved by  the  affirmative  vote  of  at  least
  three-quarters of the total membership of such board.