Memoir, descriptive and explanatory to accompany the new chart of the Atlantic Ocean : and comprising instructions, general and particular, for the navigation of that sea: also, 1. Tables of the determined positions of all its principal points, &c., from Hudson's Bay to the equator, with the authorities; illustrated by notes: including remarks on the variations of the compass. 2. A copious explanation of the winds, tides, currents, &c.; and of the different passages over the Atlantic and equator, as controlled by these phaenomena: including a general tide-table. 3. Descriptions of the coasts and islands; particularly of those parts hitherto imperfectly known; and of the Azores, Madeiras, Cape Verde, and Bermudas', Islands. 4. A description of rocks, shoals, and vigias; with the authorities on which they have been inserted in the chart /
Purdy, John,1773-1843.
London : Printed for James Whittle and Richard Holmes Laurie, Chart-Sellers to the Admiralty, &c. &c. No. 53, Fleet-Street,
1817.
Pilot guides