As soon as this business was concluded, Decatur sailed with his whole force for Tripoli, where he arrived on the 10th of August. Into this port the Abællino had carried two prizes; shortly after their entrance, the British armed brig Paulina with another vessel of war entered the harbor, and retook the prizes, the commander of the Paulina at the same time declaring his intention to pursue the Abællino if she should leave the place. This was done immediately under the castle walls, without any attempt at interference on the part of the Pasha. The American Consul, Mr. Jones, instantly requested Yusuf to cause the vessels to be restored, intimating that in case they were not, the Pasha would be compelled to pay for them himself; the Consul also demanded, that measures should be taken, in compliance with the tenth article of the treaty, to retain the British ships of war in the harbor, twenty-four hours after the sailing of the Abællino, which was about to put to sea. To both these demands Yusuf refused to yield assent; the prizes were in consequence sent to Malta, and the Abællino was detained in Tripoli. The American Consul then pulled down his flag, and sent information of the circumstances to the other Mediterranean Consulates, in order that it might be communicated to the commander of the squadron immediately on its arrival. As soon as Decatur entered the harbor, he required the Pasha to pay twenty-five thousand dollars for the two prizes which he had suffered the British to carry off; it was paid in two days. In recompense for the assistance which had been rendered to the Americans by the king of Naples and the Danish Consul, the commodore also demanded the delivery without ransom, of eight Neapolitans and two Danes, who were held in slavery in Tripoli; they were immediately surrendered and restored to their homes. Thus, in a great measure, in consequence of the promptitude and energy of the gallant officer who commanded the American squadron, within fifty-four days after its arrival in the Mediterranean, were these three piratical powers completely humbled by a force apparently inadequate to make any impression on the weakest of them. The treaty with Algiers was doubtless extorted by fear, and the Dey had no intention to keep his engagements longer than he was obliged, as facts afterwards showed; but important benefits were obtained at once, in the liberation of the captives and the restoration of the property taken in 1812. The moral effects produced in favor of the United States, not only in Barbary but in Europe, were incalculable; since that period, no Americans have been enslaved in either of those countries, and not a cent of tribute has been paid by the United States to any foreign power.