Relief shown by hachures. Mr. Ainsworth's, Mr. Brant's, Mr. Suter's, and Lord Pollington's routes are colored. "The eastern portion of the Map, from observations by Mr. A. G. Glascott, R.N." From: The Journal of the Royal Geographical Society of London. Vol. 10 (1840), pp. 275-454, 489-529; held in Firestone Library. Call number: G7 .J687 v.10 1840