In the exercise of the power vested in the President by the Constitution, and by virtue of the seventeen hundred and fifty-third section of the Revised Statutes and of the civil-service act approved January 16, 1883, the following rule for the regulation and improvement of the executive civil service is hereby amended and promulgated, as follows: RULE XII. 1. Every regular application must be supported by proper certificates of good moral character, health, and physical and mental capacity for doing the public work, the certificates to be in such form and number as the regulations of the Commission shall provide; but no certificate will be received which is inconsistent with the tenth section of the civil-service act. 2. No one shall be entitled to be examined for admission to the classified postal service if under 16 or over 35 years of age, or to the classified customs service or to the classified departmental service if under 18 or over 45 years of age; but no one shall be examined for appointment to any place in the classified customs service, except that of clerk or messenger, who is under 21 years of age; but these limitations of age shall not apply to persons honorably discharged from the military or naval service of the country who are otherwise duly qualified. Approved, December 5, 1883. CHESTER A. ARTHUR. EXECUTIVE MANSION, _December 17, 1883_ The following-named officers of the Army and Navy will constitute a board to consider an expedition to be sent for the relief of Lieutenant Greely and his party, composing what is known as the "Lady Franklin Bay Expedition," and to recommend to the Secretaries of War and the Navy, jointly, the steps the board may consider necessary to be taken for the equipment and transportation of the relief expedition, and to suggest such plan for its control and conduct and for the organization of its personnel as may seem to them best adapted to accomplish its purpose: Brigadier-General William B. Hazen, Chief Signal Officer, United States Army; Captain James A. Greer, United States Navy; Lieutenant-Commander B.H. McCalla, United States Navy; Captain George W. Davis, Fourteenth Infantry, United States Army. The board will meet in Washington, D.C., on the 20th instant. CHESTER A. ARTHUR. In the exercise of the power vested in the President by the Constitution, and by virtue of the seventeen hundred and fifty-third section of the Revised Statutes and of the civil-service act approved January 16, 1883, the following rule and the amendment to Rule XVI for the regulation and improvement of the executive civil service are hereby promulgated: RULE XXI.