61 STAT.] 80TH CONG. , 1ST SESS. -CH. 512-AUG. 7 , 1947 (b) Members of the Hospital Corps of the Navy and Naval Reserve who, on the date of approval of this Act, are serving under temporary appointments pursuant to the Act of July 24, 1941 (55 Stat. 603), as amended, in grades above commissioned warrant officer may continue to serve under such temporary appointments until the effectuation of their appointments in the Medical Service Corps of the Navy or until and including the last day of the eleventh month following the date of approval of this Act, whichever may be earlier. SPECIFICATIONS BY SECRETARY OF NAVY OF QUALIFICATIONS TO BE REQUIRED IN CERTAIN OFFICERS FOR SELECTION TO FLAG RANK SEC. 423. (a) Notwithstanding any other provision of titles I through IV of this Act, whenever in the opinion of the Secretary of the Navy there is an inadequate number of officers to meet the needs of the service in the grade of rear admiral in the line or in any staff corps of the Navy, or in the grade of brigadier general or major general in the Marine Corps, who are specially qualified for a type of duty required of officers of that grade, the Secretary of the Navy may direct that, of the total number of officers which a selection board may recom- mend for promotion to such a grade, such number, as determined by him to be necessary to meet the needs of the service, shall be officers who are specially qualified for the required type of duty: Provided, That if an officer of any grade who is junior in lineal rank to the junior officer in the promotion zone of the same grade be selected for promo- tion solely by reason of the foregoing, the selection board shall so certify in its report. (b) An officer of any grade junior in lineal rank to the junior officer in the promotion zone of the same grade who may be promoted by virtue of selection for promotion solely by operation of subsection (a) of this section shall, when one or more officers junior in lineal rank to the junior officer in such promotion zone are promoted pursuant to selection by the board convened next following that which selected the first-mentioned officer, have precedence in the grade for which selected according to his relative precedence with such other officer or officers in the grade from which promoted if at the time of his selection another officer junior to him in lineal rank was not selected other than pursuant to subsection (a) of this section and, if all the officers concerned be of a given staff corps of the Navy, the first-men- tioned officer, when all others concerned are promoted, shall be reassigned a running mate as if he were selected when the other officers concerned were selected. When all the officers concerned shall have been promoted to the grade for which selected, the President shall assign the first-mentioned officer such later date of rank in his grade that will insure the order of precedence herein prescribed and such officer thereafter shall take rank for all purposes from such later date. AMENDMENT OFTHE ACT OF MAY 4, 1898 (30 STAT. 380), AS AMENDED (34 U.S.C.21) SEC. 424 . So much of the Act of May 4, 1898 (30 Stat. 380), as amended by the Act of March 18, 1940 (54 Stat. 54), the Act of March 17. 1941 (55 Stat. 43), and the Act of August 8, 1946 (60 Stat. 932), is hereby further amended to read as follows: "In addition to the number of officers of the Medical Corps of the Navy authorized by other provisions of law the President may appoint, without the advice and consent of the Senate, for temporary service in such corps, lieutenants (junior grade) who shall while so serving 879 ,4U.S.C.§§350- 350J. Ante, pp. 312, 313. Precedence. Iteassignrelnt of rilling mate. 34U.S.C.§21. Appointment of lieutenants (jg) for temporary service in Medical Corps.