...wenty-first Massachusetts and Fifty-first Pennsylvania regiments, to Roanoke, and was there joined by part of the Ninth and Eighty-ninth New-York and Sixth New-Hampshire. We proceeded directly to Elizabeth City , and commenced disembarking on the nineteenth inst., at midnight, at a point about three miles below, on the east side. By three P. M., Col. Hawkins's brigade, consisting of the Ninth and Eighty-ni...