African memoranda : relative to an attempt to establish a British settlement on the island of Bulama, on the western coast of Africa, in the year 1792. With a brief notice of the neighbouring tribes, soil, productions, &c and some observations on the facility of colonizing that part of Africa, with a view to cultivation; and the introduction of letters and religion to its inhabitants :but more particularly as the means of gradually abolishing African slavery /by Captain Philip Beaver.