Mountain at ten o'clock P. M.

_Sunday, June 28._--Resumed our march at six o'clock A. M., passed through
Urbana by one, and came in sight of Frederick at three o'clock P. M. We
went in position on a hill, five miles from the city, having marched nine
miles. Joe Hooker has been superseded by General Meade in the command of
the Army of the Potomac. The rebels occupied Carlisle, in Pennsylvania.

_Monday, June 29._--Marched at eight o'clock. Crossed the Monocacy river.
After passing through Frederick, we turned off to the Baltimore road,
crossing the Stone Bridge. We went through Mount Pleasant, Liberty, Union
Bridge and Uniontown. Cherries are plenty on the road. The people in
general are very patriotic, doing anything for the soldiers. This day's
march, thirty-five miles, is the longest ever made by the battery,
excepting that after the first Bull Run battle. We went to camp at ten
o'clock in the night.

_Tuesday, June 30._--Uniontown. Our corps is resting to-day. Whiskey is
very abundant round here. We have marched one hundred and thirty-nine
miles since the fourteenth of June.

_Wednesday, July 1._--Left Uniontown in the morning, passed through
Taneytown, and were two miles from Gettysburg at dark, having marched
fifteen miles. The First and Eleventh corps fought a battle to-day, losing
the town of Gettysburg. General Reynolds, of the First corps, was killed.

_Thursday, July 2._--Second day's battle of Gettysburg. In line of battle
since six o'clock in the morning. The First, Second, Third and Eleventh
corps in array. Skirmishers firing briskly. Artillery commenced to play.
Nothing of importance was done, until about half-past four, our left wing
advanced and opened the battle. The centre and left were soon hotly
engaged. Our battery was in action all the afternoon. The Third corps lost
ground towards evening, until General Hancock advanced with the First and
Second corps and decided the day. The enemy made another demonstration on
the right, without success. The battle raged until nine o'clock in the
night. One time it seemed as if we were all surrounded. Battery A, Fourth
regulars, reversed their pieces ready to fire to the rear. This battery
and ours fired canister in the evening. Our fourth piece was disabled
early in the action, and sent to the rear in charge of Corporal W. Drape.
One of the rear wheels of the fourth caisson, was shot away. When night
settled down upon the battle-field, each army rested for t