1st United States civil service region, Board of United States Civil Service Examiners, U. S. Naval Submarine Base, New London, Conn., announces examination for probational appointment to position of research psychologist (psychophysics), $3,825 and $4,600 a year (grades GS-7 and GS-9), options (1) psychophysics of vision, (2) psychophysics of audition, for duty at U. S. Naval Medical Research Laboratory, U. S. Naval Submarine Base, New London, Conn., announcement 1-6-1 (50), Mar. 15, 1950.