Section 4
SEC. 4. The board shall meet at such time and in such Meetings, place as may be directed by the chairman: Provided, That regular meetings of the board shall be held not less than once each month. At least seven days' notice of each meeting shall be given to each member of the board, unless in any case of exceptional urgency the chairman shall deem it necessary to call a meeting on shorter notice; and if any two members shall request the chairman in writing to convene a special meeting of the board, it shall be the duty of the chairman to convene such meeting with the least possible delay.