Nearly fifty years ago I was midshipman on the United States brig Porpoise, of ten guns. Some of my readers may remember these little ten-gun coffins, as many of them proved to be to their crews. The Porpoise was a fair sample of the type; a full-rigged brig of one hundred and thirty tons, heavily sparred, deep waisted, and carrying a battery of eight twenty-four-pound carronades and two long chasers; so wet that even in a moderate breeze or sea it was necessary to batten down; and so tender that she required careful watching; only five feet between decks, her quarters were necessarily cramped and uncomfortable, and, as far as possible, we lived on deck. With a crew of eighty all told, Lieutenant Thompson was in command, Lieutenant Bukett executive officer, and two midshipmen were the line officers. She was so slow that we could hardly hope for a prize except by a fluke. Repeatedly we had chased suspicious craft only to be out-sailed. At this time the traffic in slaves was very brisk; the demand in the Brazils, in Cuba, and in other Spanish West Indies was urgent, and the profit of the business so great that two or three successful ventures would enrich any one. The slavers were generally small, handy craft; fast, of course; usually schooner-rigged, and carrying flying topsails and forecourse. Many were built in England or elsewhere purposely for the business, without, of course, the knowledge of the builders, ostensibly as yachts or traders. The Spaniards and Portuguese were the principal offenders, with occasionally an English-speaking renegade. The slave depots, or barracoons, were generally located some miles up a river. Here the slaver was secure from capture and could embark his live cargo at his leisure. Keeping a sharp lookout on the coast, the dealers were able to follow the movements of the cruisers, and by means of smoke, or in other ways, signal when the coast was clear for the coming down the river and sailing of the loaded craft. Before taking in the cargoes they were always fortified with all the necessary papers and documents to show they were engaged in legitimate commerce, so it was only when caught in flagrante delicto that we could hold them.