From August to October 1939, the author accompanied by his colleaguestook part in the Sikang Expedition Party of the Chinese Society of NationalScience for geographical and meteorological exploration. He led the geographical section and spent a period of t hree weeks in the area near Chiulung hsien at the southeastern corner of the Sikang proper. After this, the sectiun started northwestward for Yakang and returned to Kanting at the beginning of October.