During the night of November 7th the U.S. frigate Santee, blockading off Galveston, sent into the harbor two boats, under the command of Lieutenant James E. Jouett, with the object of destroying the man-of-war steamer General Rusk. The armed schooner Royal Yacht guarding the channel was passed unseen, but the boats shortly after took the ground and were discovered. Thinking it imprudent to attack the steamer without the advantage of a surprise, Lieutenant Jouett turned upon the schooner, which was carried after a sharp conflict. The loss of the assailants was two killed and seven wounded. The schooner was burnt. On November 22d and 23d Flag-Officer McKean, with the Niagara and Richmond, made an attack upon Fort McRea on the western side of the entrance to Pensacola Bay; Fort Pickens, on the east side, which remained in the power of the United States, directing its guns upon the fort and the Navy Yard, the latter being out of reach of the ships. The fire of McRea was silenced the first day; but on the second a northwest wind had so lowered the water that the ships could not get near enough to reach the fort. The affair was entirely indecisive, being necessarily conducted at very long range. From this time on, until the arrival of Flag-Officer David G. Farragut, a guerilla warfare was maintained along the coast, having always the object of making the blockade more effective and the conditions of the war more onerous to the Southern people. Though each little expedition contributed to this end, singly they offer nothing that it is necessary to chronicle here. When Farragut came the squadron was divided. St. Andrew's Bay, sixty miles east of Pensacola, was left in the East Gulf Squadron; all west of that point was Farragut's command, under the name of the Western Gulf Blockading Squadron. Stirring and important events were now at hand, before relating which the course of the war on the Upper Mississippi demands attention. [Illustration: MISSISSIPPI VALLEY--CAIRO TO MEMPHIS.] CHAPTER II. FROM CAIRO TO VICKSBURG. At the 37th parallel of north latitude the Ohio, which drains the northeast portion of the Valley of the Mississippi, enters that river. At the point of junction three powerful States meet. Illinois, here bounded on either side by the great river and its tributary, lies on the north; on the east it is separated by the Ohio from Kentucky, on the west by the Mississippi from Missouri. Of the three Illinois was devoted to the cause of the Union, but the allegiance of the two others, both slave-holding, was very doubtful at the time of the outbreak of hostilities.