HAIBAK, a town and khanate in Afghan Turkistan famed in Persian legend. The valley of Haibak, which is ft. above sea level, is fertile and richly cultivated. The inhabitants call them selves Jagatais, a Turki race, though now generally mixed with Tajiks and speaking Persian. In the neighbourhood of Haibak are some very typical Buddhist ruins. Haibak derives its impor tance from its position on the main line of communication between Kabul and Afghan Turkestan.