Items From the Fifteenth: By letters recently received from Poolesville we learn that the news of our glorious victories was received with unbounded joy by our soldiers. The intelligence was read to the regiment while on dress parade. Col. Devens proposed three cheers, and the regiment responded with three “rousers.” When the several companies had marched to their respective streets, three cheers more were given by each. So delighted were the men with the happy news that their feelings were utterly uncontrollable, and the soldiers were repeatedly awakened by the frequent cheers of the guard.

A national salute was fired by order of Gen. Gorman, and the band played during he evening. At about 81/2 o’clock the regiment was called out on a line, without equipments, and marched to Gen Gorman’s headquarters, where the band was playing. Three hearty cheers were given for the general, which “called him out.” The colonel addressed him briefly, and congratulated him on the recent great victories gallantly and gloriously achieved by our arms. He replied in a fitting manner; explaining to the regiment the importance of the position which had been attained by the victories, giving the men quite an insight into the movements of the army. Gen. Gorman intimated that if events transpired as he expected they would, he might be able to furnish them better news. When he had concluded, three more cheers were given, the band played a number of patriotic airs, and the regiment retired to camp.

It was announced to the regiment last week, one evening at dress parade, that orders had been received at headquarters, to ascertain how many seamen there were in that regiment who were desirous of being employed in the western flotilla. All seamen who were, were requested to report to their captains and their captains to Col. Devens. Some four or five members of Co. C. (Clinton Light Guards,) will doubtless join the flotilla.

Four contrabands came into the camp of the fifteenth last week. They attempted to cross in an old boat, but the boat not being tight, went down ere they were able to gain the shore, and they were compelled to swim the remainder of the way. they reported that twelve others started out with them, but concluded they would not cross over at present. They said a large number of negroes intended to go over to the Maryland shore soon. They were sent to Washington.

The regiment has three rebel prisoners in camp, captured near Drainsville. They are soon to be released for three union prisoners. The arrest of Gen. Stone created considerable excitement in the camp, though the general expression is, “served him right.”