1. Cayuga, Flag-Gunboat. Lieut.-Com. Harrison. 2. Pensacola, Captain H. W. Morris. 3. Mississippi, Captain M. Smith. 4. Oneida, Commander S. P. Lee. 5. Varuna, Commander C. S. Boggs. 6. Katahdin, Lieut.-Com. G. H. Preble. 7. Kineo, Lieut.-Com. Ransom. 8. Wissahickon, Lieut.-Com. A. N. Smith. CENTER DIVISION--_Admiral Farragut_. 9. Hartford, Commander Wainwright. 10. Brooklyn, Captain T. T. Craven. 11. Richmond, Commander J. Alden. THIRD DIVISION--_Captain H. H. Bell_. 12. Sciota, Lieut.-Com. Edward Donaldson. 13. Iroquois, Com. John De Camp. 14. Kennebec, Lieut.-Com. John H. Russell. 15. Pinola, Lieut.-Com. P. Crosby. 16. Itasca, Lieut.-Com. C. H. B. Caldwell. 17. Winona, Lieut.-Com. E. T. Nichols. 18. COMMANDER PORTER'S GUNBOATS. 19. Sloop Portsmouth, Commander S. Swartwout.] On the 2d of February, 1862, the Hartford sailed from Hampton Roads, and on the 20th reached Ship Island. The following day Farragut took over the command of his district and squadron from Flag Officer McKean, who up to that time had had charge of both the East and West Gulf. None of the other vessels of the expedition were yet there; but they came in one by one and were rapidly assembled at the Southwest Pass, then the principal entrance to the river. Much difficulty was encountered in getting the heavier ships over the bar, two weeks' work being needed to drag the Pensacola inside; but on the 7th of April she floated in the river, and Farragut found his force complete. It then consisted, independently of the steamers attached to the mortar flotilla, of four steam sloops-of-war of about two thousand tons each, three of half that size, one large side-wheel ship-of-war, the Mississippi, of seventeen hundred tons, and nine gun-boats of five hundred. The latter had been hurriedly built to meet the special exigencies of this war, and were then commonly known as the "ninety-day" gunboats. Each carried one eleven-inch shell-gun and one thirty-pounder rifle. The aggregate batteries of the seventeen vessels composing the squadron, excluding some light brass pieces, amounted to one hundred and fifty-four cannon, of which one hundred and thirty-five were thirty-two pounders or above.