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, tables of the determined positions of all its principal points ..., a copious explanation of the winds, tides, currents ..., descriptions of the coasts and islands particularly of Africa, and of the Azores, Madeiras, Cape Verde, and Bermudas', Islands, a description of rocks, shoals, icebergs, and vigias or supposed dangers; with the authorities on which they have been inserted in the chart.