Letters on the Colonization Society : with a view of its probable results, under the following heads : the origin of the Society : increase of the coloured population : manumission of slaves in this country : declarations of legislatures and other assembled bodies in favour of the Society : situation of the colonists at Monrovia and other towns : moral and religious character of the settlers : soil, climate, productions, and commerce of Liberia : advantages to the free coloured population by emigration to Liberia : disadvantages of slavery to the white population : character of the natives of Africa before the irruptions of the barbarians : effects of colonization on the slave trade : with a slight sketch of that nefarious and accursed traffic /