city, and by dark had so demolished the houses on the river bank as to deprive our skirmishers of shelter, and under cover of his guns he effected a lodgment in the town. The troops which had so gallantly held their position in the city under the severe cannonade during the day, resisting the advance of the enemy at every step, were withdrawn during the night, as were also those who, with equal tenacity, had maintained their post at the lowest bridge. Under cover of darkness and of a dense fog on the 12th, a large force passed the river and took position on the right bank, protected by their heavy guns on the left.

The morning of the 13th, his arrangements for attack being completed, about 9 o'clock (the movement veiled by a fog) he advanced boldly in large force against our right wing. General Jackson's corps occupied the right of our line, which rested on the railroad; General Longstreet's the left, extending along the heights to the Rappahannock above Fredericksburg. General Stuart, with two brigades of cavalry, was posted in the extensive plain on our extreme right. As soon as the advance of the enemy was discovered through the fog, General Stuart, with his accustomed promptness, moved up a section of his horse artillery, which opened with effect upon his flank and drew upon the gallant Pelham a heavy fire, which he sustained unflinchingly for about two hours.

In the mean time the enemy was fiercely encountered by General A. P. Hill's division, forming General Jackson's right, and, after an obstinate combat, repulsed. During this attack, which was protracted and hotly contested, two of General Hill's brigades were driven back upon our second line. General Early, with part of his division, being ordered to his support, drove the enemy back from the point of woods he had seized, and pursued him into the plain until arrested by his artillery. The right of the enemy's column, extending beyond Hill's front, encountered the right of General Hood, of Longstreet's corps. The enemy took possession of a small copse in front of Hood, but were quickly dispossessed and repulsed with loss.

During the attack on our right, the enemy was crossing troops over his bridges at Fredericksburg and massing them in front of Longstreet's line. Soon after his repulse on our right, he commenced a series of attacks on our left with a view of obtaining possession of the heights immediately overlooking the town. These repeated attacks were repulsed in gallant style by the Washington Artillery, under Colonel [J. B.] Walton, and a portion of McLaws' division, which occupied these heights. The last assault was made after dark, when Colonel [E. P.] Alexander's battalion had relieved the Washington Artillery (whose ammunition had been exhausted), and ended the contest for the day.

The enemy was supported in his attacks by the fire of strong batteries of artillery on the right bank of the river, as well as by his numerous heavy batteries on the Stafford Heights.

Our loss during the operations since the movements of the enemy began amounts to about 1,800 killed and wounded. Among the former I regret to report the death of the patriotic soldier and statesman, Brigadier General Thomas R. R. Cobb, who fell upon our left, and among the latter that brave soldier and accomplished gentleman, Brigadier General Maxcy Gregg, who was very seriously, and it is feared mortally, wounded during the attack on our right.

The enemy to-day has been apparently engaged in caring for his wounded and burying his dead. His troops are visible in their first position in line of battle, but, with the exception of some desultory cannonading and firing between skirmishers, he has not attempted to renew the attack.