SEC. 17: The Board of Supervisors must provide, by ordinance, for not less than one Justice of the Peace and one Constable in each township, and may provide for more in townships where population and the business therein require a greater number; provided, that, until the Board shall so provide for such Justices of the Peace and Constables, the number of each thereof in each township shall continue as now or hereafter provided by law; provided, further, that if the Legislature shall hereafter, instead of the system of Courts of Justice of the Peace now established by law, substitute some other system of inferior courts, then and in that event, it shall not be compulsory upon the Board of Supervisors to provide any number for, and the Board may discontinue the existence of all Justices of the Peace in the several townships, if such discontinuance be allowed by law, and the Board may provide for such number of inferior Judges or Justices as may be necessary for the needs of the county under such substituted system. SEC. 18: Justices of the Peace shall be nominated and elected at the times and in the manner and for the terms, now or hereafter provided by general law. Constables shall be appointed by the Sheriff from the eligible civil service list. SEC. 19: The compensation of Justices of the Peace and of Constables shall be fixed by the Board of Supervisors, and must be by salary only, which need not be uniform for the several townships, nor proportionate to population therein. Their duties and qualifications shall be such as are now, or which may hereafter be prescribed by law, or by this Charter. SEC. 20: All fees collected by any Justice of the Peace or Constable shall be paid into the County Treasury, on the first Monday of each calendar month, together with a detailed statement of the same in writing, a duplicate copy of which shall be filed with the Auditor at the same time. The fees to be so paid into the Treasury by each Constable shall include all fees charged and collected by him for service of any writ or process of any court or for any act or service done or rendered by him, or which he has power or which it is his duty to do or render, in his official capacity; and every Constable shall enter in the fee book kept by him all such fees charged and collected by him and pay the same into the County Treasury as above provided, without deduction for any such acts or services purporting or claimed to have been done or rendered by him as a private citizen. ARTICLE VI. _Duties of Officers_