July 10.—This morning, at five o'clock, the cavalry advanced from Boonsboro', passed through Keedysville, and crossed the Antietam about ten o'clock. At twelve o'clock we engaged the enemy at Jones' Cross Roads. The Harris Light led the advance, dismounted. The Rebels were driven three consecutive times from as many positions which they had chosen. Their resistance was by no means strong nor determined. Before night Buford moved his command to Sharpsburg, on the extreme left of our lines, and Kilpatrick advanced to a position on the extreme right, in the vicinity of Hagerstown, where he covered the road to Gettysburg. On the eleventh only picket skirmishes occupied the time. But on the twelfth Kilpatrick, supported by a brigade of infantry under the command of Brigadier-General Ames, of Howard's Corps, advanced upon the enemy near Hagerstown, drove them from their works, and then out of the streets of the city, and took permanent possession. This successful movement greatly contracted our lines, and brought our forces into a better position. At the close of this enterprise, as we are informed, General Meade called a council of war, at which was discussed earnestly and long the propriety of attacking the enemy. Notwithstanding the anxiety of the chief commander to advance and reap fully the fruit of Gettysburg, five of his corps commanders, out of eight, argued against the measure, and as Meade did not desire to assume the grave responsibility of a movement against such protests, no move was immediately attempted.

This statement may modify the condemnatory judgments which were formed against General Meade, and may prepare our minds rightly to interpret General A. P. Howe's report of the general pursuit. In narrating its spirit and progress, he says: "On the fourth of July it seemed evident enough that the enemy were retreating. How far they were gone we could not see from the front. We could see but a comparatively small force from the position where I was. On Sunday the Fifth and Sixth Corps moved in pursuit. As we moved, a small rearguard of the enemy retreated. We followed them, with this small rearguard of the enemy before us, up to Fairfield, in a gorge of the mountains. There we again waited for them to go on. There seemed to be no disposition to push this rearguard when we got up to Fairfield. A lieutenant from the enemy came into our lines and gave himself up. He was a Northern Union man, in service in one of the Georgia regiments; and, without being asked, he unhesitatingly told me, when I met him as he was being brought in, that he belonged to the artillery of the rearguard of the enemy, and that they had but two rounds of ammunition with the rearguard. But we waited there without receiving any orders to attack. It was a place where, as I informed General Sedgwick, we could easily attack the enemy with advantage. But no movement was made by us until the enemy went away. Then one brigade of my division, with some cavalry, was sent to follow after them, while the remainder of the Sixth Corps moved to the left. We moved on through Boonsboro', and passed up on the pike-road leading to Hagerstown.

"After passing Boonsboro' it became my turn to lead the Sixth Corps. That day, just before we started, General Sedgwick ordered me to move on and take up the best position I could over a little stream on the Frederick side of Funkstown. As I moved on, it was suggested to me by him to move carefully. 'Don't come into contact with the enemy; we don't want to bring on a general engagement.' It seemed to be the current impression that it was not desired to bring on a general engagement. I moved on until we came near Funkstown. General Buford was along that way with his cavalry. I had passed over the stream referred to, and found a strong position, which I concluded to take, and wait for the Sixth Corps to come up. In the meantime General Buford, who was in front, came back to me, and said, 'I am pretty hardly engaged here; I have used a great deal of my ammunition; it is a strong place in front; it is an excellent position.' It was a little farther out than I was—near Funkstown. He said, 'I have used a great deal of my ammunition, and I ought to go to the right; suppose you move up there, or send up a brigade, or even a part of one, and hold that position.' Said I, 'I will do so at once, if I can just communicate with General Sedgwick; I am ordered to take up a position over here, and hold it, and the intimation conveyed to me was, that they did not want to get into a general engagement; I will send for General Sedgwick, and ask permission to hold that position, and relieve you.' I accordingly sent a staff-officer to General Sedgwick with a request that I might go up at once and assist General Buford, stating that he had a strong position, but his ammunition was giving out. General Buford remained with me until I should get an answer. The answer was, 'No; we do not want to bring on a general engagement.' 'Well,' said I, 'Buford, what can I do?' He said, 'They expect me to go farther to the right; my ammunition is pretty much out. That position is a strong one, and we ought not to let it go.' I sent down again to General Sedgwick, stating the condition of General Buford, and that he would have to leave unless he could get some assistance; that his position was not far in front, and that it seemed to me that we should hold it, and I should like to send some force up to picket it at least. After a time I got a reply that, if General Buford left, I might occupy the position. General Buford was still with me, and I said to him, 'If you go away from there I will have to hold it.' 'That's all right,' said he, 'I will go away.' He did so, and I moved right up. It was a pretty good position when you cover your troops. Soon after relieving Buford, we saw some Rebel infantry advancing. I do not know whether they brought them from Hagerstown, or from some other place. They made three dashes, not in heavy force, upon our line to drive us back. The troops that happened to be there on our line were what we considered, in the Army of the Potomac, unusually good ones. They quietly repulsed the Rebels twice, and the third time they came up they sent them flying into Funkstown.

"Yet there was no permission to move on and follow up the enemy. We remained there some time, until we had orders to move on and take a position a mile or more nearer Hagerstown. As we moved up we saw that the Rebels had some light field-works—hurriedly thrown up, apparently—to cover themselves while they recrossed the river. I think we remained there three days; and the third night, I think, after we got up into that position, it was said the Rebels recrossed the river."

Sunday, July 12.—I had the misfortune to be kicked off my pins last night, just before we were relieved at the front. Approaching my sorrel pony from the rear, in a careless manner, for he could not see me until I got within short range, when he raised his heels very suddenly, and, without ceremony, planted them in my breast, laying me, not in the most gentle manner, flat upon the ground. Medical aid is considered necessary to-day, as I am suffering not a little. But, as the conflict was purely caused by my own folly, I endure my pains with becoming patience.

To-day I found the following despatches in some Northern paper, and I record them to show what contradictory reports will often find their way into the public press concerning men and measures:

"Mountain-House, near Boonsboro', July 9.—There has been no fighting this morning. The fight of yesterday, near Boonsboro', was between Generals Buford and Kilpatrick's cavalry and Rebel infantry, principally on the bushwhacking style. Our troops fell back early in the day, but subsequently reoccupied the ground. Artillery was used on both sides.

"There is no truth in the reported death of General Kilpatrick."

(SECOND DESPATCH.)

"Boonsboro', July 9, 8 P. M.—There have been no active operations on our front to-day. After the cavalry fight of yesterday the enemy drew in their forces towards Hagerstown, and formed a line on elevated ground from Funkstown on the right to the bend of the river below Williamsport on the left, thus uncovering the Shepherdstown crossing. Scouts and reconnoitring parties report that Lee is entrenching his front and drawing from his train on the Virginia side, and making general preparations for another battle. It is contradicted, to-night, that we have a force on General Lee's line of retreat in Virginia."