Gen. Van Dorn dispatches the department that his army is safe; that he took thirteen guns and 700 prisoners. So it was not so disastrous a defeat. But the idea of charging five times his number!

October 10th.—Mr. Brooks called this morning to get me to draft a passport bill, which he said he would get Congress to pass. I doubt it. I wrote the bill, however. He says fifteen or twenty members of Congress visit his house daily. They dine with him, and drink his old whisky. Mr. B. has a superb mansion on Clay Street, which he bought at a sacrifice. He made his money at trade. In one of the rooms Aaron Burr once dined with Chief Justice Marshall, and Marshall was assailed for it afterward by Mr. Jefferson. It was during Burr’s trial, and Marshall was his judge. Mr. Wickham, who was Burr’s counsel, then occupied the house, and gave a dinner party. Marshall did not know Burr was to be one of the guests. I got these facts from Mr. Foote, whom I met there the other evening.

A letter from Gen. Bragg to the President, indicates but too clearly that the people of Kentucky hesitate to risk the loss of property by joining us. Only one brigade has been recruited so far. The general says 50,000 more men are requisite. Can he have them? None!

October 11th.—There are rumors of Abolition gun-boats in the York and James Rivers. A battery of long range guns was sent down yesterday.

It is said that an army of raw Abolitionists, under Sigel, has marched from Alexandria toward Culpepper County. If this be so, we shall soon have more fighting, and more running, I hope. Lee keeps his own counsel—wisely.

October 13th.—Northern papers, received last night, speak of a battle at Perryville, Kentucky, on the 9th instant, in which the Abolitionists lost, by their own confession, 2000 killed and wounded, which means 10,000. They say Bragg’s forces held a portion of the field after the battle. If this prove not a glorious victory for our arms, I don’t know how to read Abolition journals.

I see that our Congress, late on Saturday night (they adjourn to-day), passed an act increasing the salaries of officers and employees in the departments residing at Richmond. This will make the joint compensation of my son and myself $3000; this is not equal to $2000 a year ago. But Congress failed to make the necessary appropriation. The Secretary might use the contingent fund.

Another act authorizes the President to appoint twenty additional brigadier-generals, and a number of lieutenant-generals.

The New York Herald, and even the Tribune, are tempting us to return to the Union, by promises of protecting slavery, and an offer of a convention to alter the Constitution, giving us such guarantees of safety as we may demand. This is significant. We understand the sign.

Letters from Gen. Lee do not indicate an immediate purpose to retire from the Potomac; on the contrary, he has ordered Gen. Loring, if practicable, to menace Wheeling and Pennsylvania, and form a junction with him via the Monongahela and Upper Potomac. But Loring does not deem it safe to move all his forces (not more than 6000) by that route; he will, however, probably send his cavalry into Pennsylvania.