On July 1 the fleet entered the roadstead at Gibraltar, and anchored in the shadow of the famous rock. Here the Americans found two of the most rapacious of the Tripolitan corsairs lying at anchor; one a ship of twenty-six guns under the command of the Tripolitan admiral, and the other a brig of sixteen guns. To keep an eye on these piratical worthies, the "Philadelphia" was ordered to remain at Gibraltar, while the other vessels scattered. The "Essex" was ordered to cruise along the northern shore of the Mediterranean, gathering up all the American merchantmen, and convoying them to sea. The "President" and the "Enterprise" made sail for Algiers, to convince the ruler of that country that it would be impolitic for him to declare war against the United States at that time. The desired effect was produced; for the sight of an American frigate did more to tone down the harshness of the Dey's utterances, than could the most extortionate tribute. The cruise of the "Essex" was uneventful, save for a dispute between the officers of the American man-of-war and a Spanish xebec in the roads of Barcelona. The trouble arose in this wise:-- The "Essex," though a small vessel, was perfectly appointed, of handsome model and appearance, and her crew was drilled to the highest possible state of discipline and efficiency. When she cast anchor at Barcelona, she straightway became the talk of the town, and her officers became the lions of the hour, vastly to the disgust of the Spaniards on the xebec lying in the same port. Accordingly they took every opportunity to annoy the Americans, challenging the boats of the "Essex" as they passed the xebec, and not scrupling to use abusive language to Capt. Bainbridge himself. One night a boat, under command of Lieut. Stephen Decatur, was brought under the guns of the xebec, and held there while the Spaniards shouted insults from the deck above. Decatur called for the officer in command, and remonstrated with him, but receiving no satisfaction, ordered his men to shove off, declaring he would call again in the morning. Accordingly, in the forenoon of the following day, a boat from the "Essex," with Decatur in the stern-sheets, made for the Spanish vessel. Coming alongside, Decatur went on board, and asked for the officer who had been in command the night previous. He was told that the man he sought had gone ashore. "Well, then," thundered Decatur, in tones that could be heard all over the vessel, "tell him that Lieut. Decatur of the frigate 'Essex' pronounces him a cowardly scoundrel, and when they meet on shore he will cut his ears off." And having thrown this bombshell into the enemy's camp, Decatur returned to his ship.