Gen. Lee’s locality and operations, since the battle of Sharpsburg or Shepherdstown, are still enveloped in mystery.

About one hundred of the commissioned officers of Pope’s army, taken prisoners by Jackson, and confined as felons in our prisons, in conformity to the President’s retaliatory order, were yesterday released on parole, in consequence of satisfactory communications from the United States Government, disavowing Pope’s orders, I presume, and stating officially the fact that Pope himself has been relieved from command.

We have taken, and paroled, within the last twelve or fifteen weeks, no less than forty odd thousand prisoners! The United States must owe us some thirty thousand men. This does not look like progress in the work of subjugation.

Horrible! I have seen men just from Manassas, and the battle-field of the 30th August, where, they assure me, hundreds of dead Yankees still lie unburied! They are swollen “as large as cows,” say they, “and are as black as crows.” No one can now undertake to bury them. When the wind blows from that direction, it is said the scent of carrion is distinctly perceptible at the White House in Washington. It is said the enemy are evacuating Alexandria. I do not believe this.

A gentleman (Georgian) to whom I gave a passport to visit the army, taking two substitutes, over forty-five years of age, in place of two sick young men in the hospitals, informs me that he got upon the ground just before the great battle at Sharpsburg commenced. The substitutes were mustered in, and in less than an hour after their arrival, one of them was shot through the hat and hair, but his head was untouched. He says they fought as well as veterans.

September 26th.—The press here have no knowledge of the present locality of Gen. Lee and his army. But a letter was received from Gen. L. at the department yesterday, dated on this side of the Potomac, about eighteen miles above Harper’s Ferry.

It is stated that several hundred prisoners, taken at Sharpsburg, are paroled prisoners captured at Harper’s Ferry. If this be so (and it is said they will be here to-night), I think it probable an example will be made of them. This unpleasant duty may not be avoided by our government.

After losing in killed and wounded, in the battle of Sharpsburg, ten generals, and perhaps twenty thousand men, we hear no more of the advance of the enemy; and Lee seems to be lying perdue, giving them an opportunity to ruminate on the difficulties and dangers of “subjugation.”

I pray we may soon conquer a peace with the North; but then I fear we shall have trouble among ourselves. Certainly there is danger, after the war, that Virginia, and, perhaps, a sufficient number of the States to form a new constitution, will meet in convention and form a new government.

Gen. Stark, of Mississippi, who fell at Sharpsburg, was an acquaintance of mine. His daughters were educated with mine at St. Mary’s Hall, Burlington, N. J.—and were, indeed, under my care. Orphans now!