The Quaker abolitionist Joseph John Gurney visited the British West Indies and Cuba in 1840, two years after the end of the apprenticeship system in order to report on the conditions in the islands. He concluded that progress (in moral and material terms) was being made, and that the economy of the British colonies was not adversely affected. The thirteenth letter describes his visit to Cuba, where he saw large slave ships moored in the harbour, and prison-like 'barracoons' where the newly arrived slaves were taken.