I hope General Terry will follow it up by the capture of Wilmington, although I do not look for it, from Admiral Porter's dispatch to me. I rejoice that Terry was not a West-Pointer, that he belonged to your army, and that he had the same troops with which Butler feared to make the attempt.
Admiral Dahlgren, whose fleet is reenforced by some more iron-clads, wants to make an assault à la Fisher on Fort Moultrie, but I withhold my consent, for the reason that the capture of all Sullivan's Island is not conclusive as to Charleston; the capture of James Island would be, but all pronounce that impossible at this time.
Therefore, I am moving (as hitherto designed) for the railroad west of Branchville, then will swing across to Orangeburg, which will interpose my army between Charleston and the interior.
Contemporaneous with this, Foster will demonstrate up the Edisto, and afterward make a lodgment at Bull's Bay, and occupy the common road which leads from Mount Pleasant toward G