Washington, November 2, 1864.

Admiral Porter has communicated to the Secretary of the Navy the following interesting particulars from Lieutenant Cushing, in regard to the sinking of the rebel ram Albemarle:

"Albemarle Sound, October 30, 1864.

"Sir: I have the honor to report that the rebel ram Albemarle is at the bottom of Roanoke river.

"On the night of the 27th, having prepared my steam launch, I proceeded towards Plymouth with thirteen officers and men, partly volunteers from the squadron.

"The distance from the mouth of the river to the ram was about eight miles, the stream averaging in width some two hundred yards, and lined with the enemy's pickets.

"A mile below the town was the wreck of the Southfield, surrounded by some schooners, and it was understood that a gun was mounted there to command the bend. I therefore took one of the Shamrock's cutters in tow, with orders to cast off and board at that point in case we were hailed.

"Our boat succeeded in passing the pickets, and even the Southfield within twenty yards, without discovery, and we were not hailed until by the lookouts on the ram.

"The cutter was then cut off and ordered below, while we made for our enemy under a full head of steam. The rebels sprang their rattle, rang the bell and commenced firing, at the same time repeating their hail, and seeming much confused.

"The light of the fire ashore showed me the iron-clad made fast to the wharf, with logs around her, about thirty feet from her side. Passing her closely, we made a complete circle, so as to strike her fairly, and went into her bows on.