SEC. 4: The County of Los Angeles shall have a Board of Supervisors consisting of five members, each of whom must be an elector of the district which he represents, must reside therein during his incumbency, must have been such an elector for at least one year immediately preceding his election, and shall be elected by such district. Their terms of office shall be four years, each shall hold until his successor is elected and qualified, and they shall each receive a salary of $5000 per year payable monthly from the County Treasury. They shall devote all their time during business hours to the faithful service of the public. SEC. 5: The County is hereby divided into five supervisor districts, the boundaries of which shall be and remain as they now are until otherwise changed as provided in this Charter. SEC. 6: At the general election to be held in November, 1914, supervisors shall be elected from the First and Third Supervisor districts, whose terms shall begin at noon on the first Monday after the first day of January, 1915, and end at noon on the first Monday in December, 1918; provided, that each shall hold office until his successor is elected and qualified. At the general election to be held in November, 1916, supervisors shall be elected from the Second, Fourth and Fifth districts, whose terms shall begin at noon on the first Monday after the first day of January, 1917, and end at noon on the first Monday in December, 1920; provided, that each shall hold office until his successor is elected and qualified. At each general election after November, 1916, there shall be elected, either two or three supervisors, as the case may be, for terms of four years, beginning at noon on the first Monday in December next after their election, and ending at noon on the first Monday in December, four years thereafter. SEC. 7: The Board of Supervisors may, by a two-thirds vote of its members, change the boundaries of any supervisor district. No such boundaries shall ever be so changed as to affect the incumbency in office of any supervisor. Any change in the boundaries of any supervisor district must be made within one year after a general election. SEC. 8: Whenever a vacancy occurs in the Board of Supervisors the Governor shall fill such vacancy, and the appointee shall hold office until the election and qualification of his successor. In such case, a Supervisor shall be elected at the next general election, to fill the vacancy for the unexpired term, unless such term expires on the first Monday in December succeeding said election.