Relief shown by hachures, soundings, and spot heights. Includes 4 cross sections: Town of Horta from the anchorage; Magdalena Rocks; The channel of Fayal from the south-westward; The channel of Fayal from the northward. "Sold by R.B. Bate, agent for the Admiralty charts, 21 Poultry." "1940." Historic Maps copy has paper label on verso: No. 1940.