Observations Upon the Windward Coast of Africa The religion, character, customs, &c. of the natives; with a system upon which they may be civilized, and a knowledge attained of the interior of this extraordinary quarter of the globe; and upon the natural and commercial resources of the country; made in the years 1805 and 1806; with an appendix, containing a letter to Lord Howick, on the most simple and effectual means of abolishing the slave trade