October 12th.—Hon. G. A. Henry, Senator from Tennessee, writes to the Secretary that it is rumored that Gen. Pemberton is to command Gen. Polk’s corps in Tennessee. He says if this be true, it will be disastrous; that the Tennessee troops will not serve under him, but will mutiny and desert.

It is reported to-day by Gen. Elzey (on what information I know not) that Meade’s army has been reduced to 30,000 or 40,000 men, by the heavy reinforcements sent to extricate Rosecrans. Be this as it may, there is no longer any doubt that Lee is advancing toward the Potomac, and the enemy is retreating. This must soon culminate in something of interest.

I saw Commissary-General Northrop to-day, and he acknowledges that Mr. Moffitt, who sells beef (gross) to the butchers at from 45 to 55 cents, is one of his agents, employed by Major Ruffin, to purchase beef for the army! The schedule price is from 16 to 20 cents, and he pays no more, for the government—and if he buys for himself, it is not likely he pays more—and so we have a government agent a speculator in meat, and co-operating with speculators! Will Mr. Secretary Seddon permit this?

October 13th.—Gen. Lee’s cavalry are picking up some prisoners, several hundreds having already been sent to Richmond. It is said the advance of his army has been delayed several weeks for want of commissary stores, while Commissary-General Northrop’s or Major Ruffin’s agent Moffitt, it is alleged, has been selling beef (gross) to the butchers at 50 cents per pound, after buying or impressing at from 16 to 20 cents.

Gen. Lee writes that a scout (from Washington?) informs him that Gen. Gilmore has been ordered to take Charleston at all hazards, and, failing in the attempt, to make a flank movement and seize upon Branchville; which he (Gen. Lee) deems an unlikely feat.

What a change! The young professors and tutors who shouldered their pens and became clerks in the departments are now resigning, and seeking employment in country schools remote from the horrid sounds of war so prevalent in the vicinity of the Capitol, and since they were ordered to volunteer in the local companies, which will probably have some sharp practice in the field. They are intent, however, on “teaching the young idea how to shoot.” The young chiefs of bureaus, being fixed “for life,” did not volunteer.

October 14th.—A letter from Gen. Lee to the Secretary of War, dated 11th inst. at Madison C. H., complains of the injury done by the newspapers of Richmond, which contain early accounts of his movements, and are taken quickly (by flag of truce? or Gen. Winder’s corps of rogues and cut-throats?) to the enemy. He says he is endeavoring to strike at Meade, and has already captured, this week, some 600 of the enemy (cavalry), including that number of horses. The Secretary sent the requisite notice to the editors.

Gen. Gilmer, at Charleston, suggests the removal of the guns on the boats in that harbor to land batteries, to be commanded by officers of the navy.

An order has been sent to Gen. S. Jones, West Virginia, for the 8th and 14th Regiments Virginia Cavalry.

October 15th.—To-day, at 12 m., I saw a common leatherwing bat flying over the War Department. What this portends I do not pretend to say, perhaps nothing. It may have been dislodged by the workmen building chimneys to the offices of the department.