A short account of that part of Africa : inhabited by the Negroes : with respect to the fertility of the country, the good disposition of many of the natives, and the manner by which the slave trade is carried on : extracted from divers authors, in order to shew the iniquity of that trade, and the falsity of the arguments usually advanced in its vindication : with quotations from the writings of several persons of note, viz. George Wallis, Francis Hutcheson, and James Foster, and a large extract from a pamphlet, lately published in London, on the subject of the slave trade