Several empty slavers were captured by the squadron about this period; they are thus noticed by the National Intelligencer:--“It is remarkable that within the same week, should have arrived in our ports as prizes to the American squadron, for having been engaged in the slave-trade--the Pons, above mentioned, captured by the Yorktown; the Panther, a prize of the same vessel, which arrived at Charleston on Monday; and the Robert Wilson, a prize to the sloop-of-war Jamestown, which reached Charleston on Thursday.” In 1846, the sloop-of-war Marion, brigs Dolphin and Boxer, with the flag-ship United States, Commodore Read, constituted the squadron. Sixty miles of additional sea-coast territory had been purchased by Governor Roberts, from the natives. The influence of traders, of the slave-trade, and even of England being thrown in the way of obtaining possession of the purchased territory, Governor Roberts made application to the commodore, that one of the vessels of the squadron might cruise for several weeks within the limited territory, for the purpose of facilitating negotiation. The Dolphin was assigned this service; her commander offered General Lewis, the agent, a passage to such points as he wished to visit, and otherwise rendered service as circumstances required. The Dolphin was lying at Cape Mount, watching the suspicious American bark “Chancellor,” which was trading with a slave-dealer named Canot. The British cruiser “Favorite” was stationed off the Cape, and suggested to the chiefs, that as they were in treaty with his government for the suppression of the slave-trade, and as Canot was on their territory making preparations for slaving, they were bound to destroy his establishment. The chiefs accordingly burnt his premises, containing a large amount of goods he had shipped at New York. Canot having been by no means secure in conscience, had left with his family and taken up his residence in Monrovia. The Dolphin proceeded to Porto Praya for stores, and the Chancellor was watched in the mean time by the British cruisers at the Cape and at the Gallinas. Among the traverses worked by the slave-traders, the practice had been adopted, to fill canoes with slaves and send them off the coast, to be picked up by vessels in search of a cargo, which, from the blockade, could not reach the shore. In one instance, fifty of these were found in a single canoe, and taken by a British cruiser. On the return of the Dolphin, the Chancellor was seized by Commander Pope as a prize, on the ground of having a slave-deck laid, and water-casks with rice on board sufficient for a slave cargo, and sent to the United States for adjudication. The commodore, after having cruised along the entire extent of the slave-coast, rendering such service as American interests required, was relieved, in 1847, by the sloop-of-war Jamestown, Commodore Bolton. The frigate United States then proceeded to the Mediterranean station, to complete her cruise.