Relief shown by hachures and spot heights. Vegetation and copal and rubber districts districts along coast and islands and reefs offshore are shown. Villages along coast, delta, and river are shown. "The Delta of the Rufiji from the Admiralty Chart and other authorities. All above Mpembeno according to Mr. Beardall's original Map." From: Proceedings of the Royal Geographical Society and monthly record of geography. Vol. 3 (1881), no. 11, pp. 641-56; held in Firestone Library. Call number: G7 .J6873