Published thirty years on from the 1807 abolition of the British slave trade, this pamphlet describes the progress of abolitionist campaigns, and the enormities of the continuing foreign slave trade, described as "this hydra-headed monster" (3). It lists country by country the treaties entered into, and the extent of the illegal slave trade. It also uses reports from British Commissioners in Africa and the Americas, and African travel narratives (Park, Gray, Denham, Clapperton, Oudney, Rankin) to detail the nature of the trade.