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 / by Joseph Corry ; with an appendix, containing a letter to Lord Howick, on the most simple and effectual means of abolishing the slave trade.