A letter from Gen. Lee, dated October 1st, says that McClellan has not crossed the Potomac. Some of his scouts have been at Martinsburg, or in its vicinity. It is not to be supposed that Lee can be amused by McClellan, while a force of any magnitude is sent against Richmond. Some fear this, but I don’t.

October 6th, Monday.—A Jew store, in Main Street, was robbed of $8000 worth of goods on Saturday night. They were carted away. This is significant. The prejudice is very strong against the extortionists, and I apprehend there will be many scenes of violence this winter. And our own people, who ask four prices for wood and coal, may contribute to produce a new Reign of Terror. The supplies necessary for existence should not be withheld from a suffering people. It is dangerous.

There is great diversity of opinion yet as to the locality of McClellan’s army and Lee’s intentions.

A dispatch from Gen. Van Dorn, in West Tennessee, indicates that we are gaining a victory over Rosecrans. The battle was in progress, not completed.

October 7th.—Nothing further has been heard from Corinth. A great battle is looked for in Kentucky. All is quiet in Northern Virginia.

Some 2500 Confederate prisoners arrived from the North last evening. They are on parole, and will doubtless be exchanged soon, as we have taken at least 40,000 more of the enemy’s men than they have captured of ours.

Yesterday, Congress, which has prolonged the session until the 13th instant, passed a bill increasing the pay of soldiers four dollars per mouth. I hope they will increase our pay before they adjourn. Congress also, yesterday, voted down the proposition of a forced loan of one-fifth of all incomes. But the Committee of Ways and Means are instructed to bring forward another bill.

This evening Custis and I expect the arrival of my family from Raleigh, N. C. We have procured for them one pound of sugar, 80 cents; one quart of milk, 25 cents; one pound of sausage-meat, 37½ cents; four loaves of bread, as large as my fist, 20 cents each; and we have a little coffee, which is selling at $2.50 per pound. In the morning, some one must go to market, else there will be short-commons. Washing is $2.50 per dozen pieces. Common soap is worth 75 cents per pound.

October 8th.—At last we have definite accounts of the battle of Corinth, on Friday, Saturday, and Sunday last. We have been defeated, and fearful has been the slaughter on both sides. The enemy had overwhelming numbers. We have no particulars, further than that our army retreated. This is bad for Van Dorn and Price.

My family arrived last night, well, and pleased with the cottage, which they call Robin’s Nest. But we were saddened by the loss of a trunk—the most valuable one—containing some heavy spoons, forks, and other plate, saved from the wreck at Burlington; my wife’s velvet cloak, satin dress (bought in Paris), my daughter’s gold watch, and many other things of value. Twelve trunks, the right number, were delivered; but one did not belong to us.