I have, to the best of my knowledge, pointed out the principal sources, of that immense supply of Slaves, which furnishes so large an exportation every year. If all that are taken on board the ships, were to survive the voyage, and be landed in good order, possibly the English, French, and Dutch islands, and colonies, would be soon overstocked, and fewer ships would sail to the Coast. But a large abatement must be made for mortality.—After what I have already said of their treatment, I shall now, that I am again to consider them on board the ships, confine myself to this point. In the Portuguese ships, which trade from Brasil to the Gold Coast and Angola, I believe a heavy mortality is not frequent. The Slaves have room, they are not put in irons, (I speak from information only,) and are humanely treated. With our ships the great object is, to be full. When the ship is there, it is thought desirable, she should take as many as possible. The cargo of a vessel of a hundred tons, or little more, is calculated to purchase from two hundred and twenty to two hundred and fifty Slaves. Their lodging-rooms below the deck, which are three, (for the men, the boys, and the women,) besides a place for the sick, are sometimes more than five feet high, and sometimes less; and this height is divided towards the middle, for the Slaves lie in two rows, one above the other, on each side of the ship, close to each other, like books upon a shelf. I have known them so close, that the shelf would not, easily, contain one more. And I have known a white man sent down among the men, to lay them in these rows to the greatest advantage, so that as little space as possible might be lost. Let it be observed, that the poor creatures, thus cramped for want of room, are likewise in irons, for the most part both hands and feet, and two together, which makes it difficult for them to turn or move, to attempt either to rise or to lie down, without hurting themselves, or each other. Nor is the motion of the ship, especially her heeling, or stoop on one side, when under sail, to be admitted; for this, as they lie athwart, or across the ship, adds to the uncomfortableness of their lodging, especially to those who lie on the leeward, or leaning side of the vessel. Dire is the tossing, deep the groans.——