Sunday, June 15.—Fair Oaks. Heavy firing in the direction of Fort Darling.

Monday, June 16.—Fair Oaks. General Sickles’ brigade had a short engagement with the rebels. General McClellan passed the line towards evening. Heavy firing on both wings of the army.

Tuesday, June 17.—Heavy cannonading in the direction of Fort Darling.

Wednesday, June 18.—Fair Oaks. General Porter’s artillery had quite an engagement. In the afternoon the whole of the Second corps got ready for action. Our battery was harnessed up. The infantry of Richardson’s division advanced under cover of two light batteries. The engagement was of short duration. Our loss, one hundred and seventy, killed and wounded, all of Richardson’s division. General McClellan was present.

Thursday, June 19.—Fair Oaks. The enemy lost nearly four hundred men in yesterday’s engagement.

Friday, June 20.—Fair Oaks. Heavy skirmishing along the whole line.

Saturday, June 21.—Fair Oaks. The whiskey rations are countermanded to-day. During the night we were called under arms five times, the rebels making repeated attacks on the railroad.

Sunday, June 22.—Quiet along the line.

Monday, June 23.—Fair Oaks. Short engagement on the railroad. Thunder shower at night.

Tuesday, June 24.—Fair Oaks. The enemy attacked at two o’clock A. M.