Relief shown by hachures. Depth shown by soundings. Distribution of gold, cotton, galena, pongee silk, marble, lead, copper, iron, mulberry tree, asbestos, white copper, precious stone, and coal resources is shown. Mr. Markham's route shown in red. From: The Journal of the Royal Geographical Society of London. Vol. 40, (1870), pp. 207-28; held in Firestone Library. Call number: G7 .J687 v.40 1870