Route of expedition, and conjectural course of upper Irrawaddy River, shown in red. Trigonometrical points are marked. "The position of Bamo (Long. 96°54'E.) and the detail south of Lat. 27° depend on the observation of Captain Bowers." Includes inset: Sketch map showing the river system of Tibet, Assam & Burma [scale ca. 1:9,239,000]. Area of primary map is shown in relation to Tibet, Himalayan Mountains, and Bay of Bengal. Relief shown by hachures and spot heights. From: Proceedings of the Royal Geographical Society and monthly record of geography. Vol. 4 (1882), no. 5, pp. 257-73; held in Firestone Library. Call number: G7 .J6873