COX, SIR PERCY (1864-1937 ), British administrator, was born on Nov. 2o, 1864, educated at Harrow and Sandhurst, and entered the army in 1884, serving in the end battalion of the Cameronians until 1889. He gained his very great knowledge of and experience in Eastern politics and diplomacy first in the Indian political department, and then in a series of consular ap pointments in the Persian gulf, where he became political resident in 1909. He was chief political officer to a section of the Indian Expeditionary Force in 1914. He was appointed British ambassa dor to Tehran from 1918 to 192o, and high commissioner in Mesopotamia in the critical years 1920 to 1923. For the history of his administration see 'IRAQ. Sir Percy Cox also represented the British Government in the Mosul boundary negotiations with Turkey. He was the recipient of many honours, including the G.C.M.G. (1922), and was a member of many learned societies.