Such in fact were the circumstances of Africa prior to the year 1808; at which time the slave trade carried on by Great Britain, and the United States of North America having been abolished by those respective governments, and the slave trade of France and Holland being virtually abolished by the war, a considerable mitigation of the prevailing evils took place. A farther improvement was effected about three years afterwards, by means of the article in the treaty of amity with Portugal, which bound Portuguese subjects to confine their trading in slaves to places in Africa actually under the possession of that Government. By this arrangement the whole coast of Africa from Cape Blanco to the eastern extremity of the Gold Coast (with the exception of the Portuguese settlement of Bissao) were in a considerable degree liberated from the operation of the slave trade. The Spaniards indeed claimed a right of trading within those limits; but it was a right which, in its exercise, did not prove so prejudicial as might have been expected. The slave trade carried on under the Spanish flag, has been found in most instances not to be a _bona fide_ Spanish trade, but a British or American slave trade in disguise; and latterly the Portuguese, being excluded by treaty from the whole to the windward coast except Bissao, have begun to avail themselves of the same disguise. Many slave vessels under these circumstances, bearing the Spanish flag, have been captured by the British cruizers: and the condemnations which have taken place, have tended greatly to abridge the extent of this trade. Still however the course of improvement in this part of Africa, has been extremely retarded by the right which Portugal has hitherto retained of carrying on the slave trade from Bissao, and by the trade carried on either by real Spanish ships or by counterfeit Spaniards so well disguised as to escape detection. Besides the trade thus carried on, cargoes of slaves have frequently been smuggled by English and American traders, availing themselves of the facilities which the creeks and rivers of Africa afford for such transactions, and taking their chance of escaping the cruizers on the coast. A contraband trade of this kind appears to have been carried on to some extent; by means of which various cargoes of slaves have been transported to the Brazils and the Island of Cuba. These facts are mentioned for the purpose of shewing that considerable obstacles to improvement, arising from the partial continuance of the slave trade, are still experienced, even in that part of Africa which has enjoyed the greatest privileges and exemptions. Under such circumstances it would be most unreasonable to look for that progress in the arts of agriculture and peace-commerce which we should have been entitled to expect, in case the suppression of the slave trade had been complete and universal.