He arrived with a full supply of guns and ammunition, furnished mostly from the navy department, besides a large quantity of agricultural implements, and a sugar-mill. The constitution was at once approved by the Monrovians, and in course of time it was accepted by the entire three colonies. A firm stand was taken against the slave-trade, and the governor succeeded in getting the legislature at Monrovia and the people to back him in efforts to suppress it. His indignant appeals and strong-handed measures had their effect in turning the attention of our government to the use of the American flag in the slave-trade as a protection from British cruisers. Hear him: “The chief obstacle to the success of the very active measures pursued by the British government for the suppression of the slave-trade on the coast, is the _American flag_. Never was the proud banner of freedom so extensively used by those pirates upon liberty and humanity as at this season.” He did not stop at words. An American schooner named the _Euphrates_, which had been boarded fifteen times, and three times sent to Sierra Leone, and escaped condemnation on account of her nationality, was brought into Monrovia by a British cruiser, and instantly seized by Governor Buchanan, for the purpose of sending her to the United States for trial, on suspicion of being engaged in the slave-trade. It may here be remarked that not only this vessel, but the American sloop “_Campbell_” was also detained, and taken to Governor Buchanan, under similar circumstances. These proceedings were in direct violation of our doctrine as to the inviolability of American vessels by foreign interference; and he had no right to authorize or connive at English cruisers interfering in any degree with such vessels. These circumstances, together with the report of Governor Buchanan, that “The Euphrates is one of a number of vessels, whose names I have forwarded as engaged in the slave-trade, under American colors,” will show the extent to which the American flag has been used in the traffic; and to those who have patriotism and humanity enough to vindicate the rights of that flag against foreign authority, and resist its prostitution to the slave-trade, it will conclusively prove the necessity of a well-appointed American squadron being permanently stationed on the west coast of Africa. The Euphrates being placed in the hands of Governor Buchanan, who had resolved on sending her to the United States for trial, was made available in a crisis when she proved of singular service as a reformed criminal against her old trade.