The horrors of slavery : exemplified in the life and history of the Rev. Robert Wedderburn, V.D.M. (late a prisoner in His Majesty's gaol at Dorchester, for conscience-sake,) son of the late James Wedderburn, Esq., of Inveresk, slave-dealer, by one of his slaves in the island of Jamaica : in which is included the correspondence of the Rev. Robert Wedderburn and his brother, A. Colville, Esq., alias Wedderburn, of 35, Leadenhall Street : with remarks on, and illustrations of the treatment of the blacks, and a view of their degraded state, and the disgusting licentiousness of the planters,