US Presidency
1871

A vacancy occurring in the lowest grade of any group of offices shall be filled, after due public notice, from all applicants who shall present themselves, and who shall have furnished the evidence and satisfied the preliminary examination already mentioned, and who shall have passed a public competitive examination to test knowledge, ability, and special qualifications for the performance of the duties of the office. The board conducting such competitive examination shall prepare, under the supervision of the Advisory Board, a list of the names of the applicants in the order of their excellence as proved by such examination, beginning with the highest, and shall then certify to the nominating or appointing power, as the case may be, the names standing at the head of such list, not exceeding three, and from the names thus certified the appointment shall be made. 4.