SHIP ISLAND was occupied by the advance-guard of General Butler's expedition on 3d December: The troops consisted of the 26th Massachusetts and 9th Connecticut Volunteers, under command of Brigadier-General Phelps. They left Massachusetts in the steamer Constitution; their embarkation was duly illustrated in Harper's Weekly at the time. On 3d inst., as we said, they arrived at their destination, landed, and occupied the island without molestation. It is understood that they are to be followed by other troops, on whose arrival operations will be commenced against Mobile or New Orleans, or both. The following account of Ship Island will, with our illustrations, enable our readers to understand the importance of the movement:
Ship Island is situated in longitude 89°W and a little north of latitude 30°N, and is the property of the State of Mississippi. It is about sixty miles [97 km] from New Orleans, nearly the same distance from the Northeast Pass, at the mouth of the Mississippi River, forty miles from Mobile, and ninety from Fort Pickens. It lies between Horn Island on the east and Cat Island on the west, and is distant about five miles [8 km] from each. Some ten or twelve miles [19 km] to the north, on the main land of Mississippi, are the towns of Biloxi, Pascagoula, and Gulfport. These towns are favorite summer resorts for the wealthy planters and merchants of the Gulf States, and, in consequence of a bar off their shore, are now the places of refuge for rebel gun-boats.
Ship Island is somewhat undulating, and extends in a slight curve about seven miles [11 km] east-northeast and westsouthwest. At West Point (the western end), where the fort is located, the island is little more than an eighth of a mile wide, and is a mere sand spit, utterly barren of grass or foliage of any kind. This eastern end, or East Point, is about three-quarters of a mile in width, and is well wooded with pine, cedar, and live-oak.
The whole island contains a fraction less than two square miles of territory. Excellent water can be obtained in unlimited supply by sinking a barrel any where on the place. The great advantage of this is too palpable to require comment.
The island possesses a very superior harbor, into which nineteen feet can be carried at ordinarily low water. It is situated north of the west end of the island. The anchorage, with water equal to the depth on the bar, is five miles long [8 km], and averages three and a quarter miles [5 km] in width. The harbor is safe for the most dangerous storms in the Gulf—those from the eastward, southward and eastward, and southward—and might be easily entered during these storms without a pilot, if good light-houses were placed in proper positions. The rise and fall of the tide is only from twelve to fourteen inches [31-36 cm].
FORT MASSACHUSETTS, of which we give an illustration, is thus described in the Herald letter:
This fort, which is situated on the sand spit at the extreme western end of the island, is nearly circular in shape, somewhat resembling a pear in form. As I have stated elsewhere, its construction was commenced by the federal Government, and when in a state of considerable progress was burned by the rebels, who afterward rebuilt and then abandoned it. It is of brick, and rendered bomb-proof by sand-bags placed five or six feet deep in front of the walls.
The rebels built eleven casemates, and our forces have built two more since they have occupied the fort. The casemates are bomb-proof. The fort is at present but one tier high. It is provided with Dahlgren's 9-inch [229 mm] shell guns of very heavy calibre and in perfect order, and they are hourly expecting sixteen more very heavy guns from Pensacola. Besides this, Captain Manning's battery have landed five of their steel rifled cannon, with the Sawyer projectile. There were six of these guns on board the Constitution, but unfortunately one of them was lost overboard in removing them from the transport. It is hoped that they will be able to recover it, as a buoy floats right over the spot where