Memoir, descriptive and explanatory
Subtitle: to accompany the charts of the northern Atlantic ocean and comprising instructions, general and particular, for the navigation of that sea
By: by John Purdy, hydrographer
Edition: Eighth edition / cor. and materially improved ... with an appendix.
Publisher: Printed for R.H. Laurie
Published: 1840
Place of publication: London
Language: eng
Number of pages: 506
Subjects: Pilot guides; Notices to mariners; Navigation; Charts, diagrams
Notes: "Also, 1. Tables of the determined positions of all its principal points, &c., from Greenland to the Equator, with the authorities, illustrated by notes: including remarks on the variations of the compass, and descriptions of the lighthouses on the different coasts. 2. A copious explanation of the winds, tides, currents, &c.; and of the different passages over the Atlantic, as controlled by these phænomena, including a general tide-table. 3. Descriptions of the coasts and islands; particularly of Africa, and of the Azores, Madeiras, Cape Verde, and Bermudas', islands. 4. A description of rocks, shoals, icebergs, and vigias or supposed dangers; with the authorities on which they have been inserted in the charts."

Includes bibliographical references.