The Governor demanded the State magazine to-day of the War Department, in whose custody it has been for a long time. What does this mean? The Governor says the State has urgent use for it.

Gen. Cooper visited the President twice to-day, the Secretary not once. The Enquirer, yesterday, attacked and ridiculed the Secretary of War on his passport system in Richmond.

The Northern papers contain the following letter from President Lincoln to Gen. Grant:

“Executive Mansion,
“Washington, July 13th, 1863.

“Major-General Grant.

“My Dear General:—I do not remember that you and I ever met personally. I write this now as a grateful acknowledgment for the almost inestimable service you have done the country. I wish to say a word further. When you first reached the vicinity of Vicksburg I thought you should do what you finally did—march the troops across the neck, run the batteries with the transports, and thus go below; and I never had any faith, except a general hope that you knew better than I, that the Yazoo Pass expedition and the like could succeed. When you got below and took Port Gibson, Grand Gulf, and vicinity, I thought you should go down the river and join Gen. Banks; and when you turned northward, east of the Big Black, I feared it was a mistake. I now wish to make the personal acknowledgment that you were right and I was wrong. A. Lincoln.”

If Pemberton had acted differently, if the movement northward had been followed by disaster, then what would Mr. Lincoln have written to Grant? Success is the only standard of merit in a general.

September 10th.—A Mr. J. C. Jones has addressed a letter to the President asking permission to run the blockade to confer with Mr. Bates, of President Lincoln’s cabinet, on terms of peace, with, I believe, authority to assure him that none of the Northwestern States, or any other free States, will be admitted into the Confederacy. Mr. J. says he has been on intimate terms with Mr. B., and has conceived the idea that the United States would cease the war, and acknowledge the independence of the South, if it were not for the apprehension of the Northwestern States seceding from the Union. If his request be not granted, he intends to enter the army immediately. He is a refugee from Missouri. He assures the President he is his friend, and that a “concentration of power” in his hands is essential, etc. The President refers this paper, with a gracious indorsement, to the Secretary of War, recommending him either to see Mr. Jones, or else to institute inquiries, etc.

S. Wyatt, Augusta, Ga., writes in favor of appeals to the patriotism of the people to counteract what Mr. Toombs has done. What has he done? But he advises the President, to whom he professes to be very friendly, to order a discontinuance of seizures, etc.

A. Cohen (Jew name), purser of the blockade-running steamer “Arabia” at Wilmington, has submitted a notable scheme to Gen. Winder, who submits it to the Secretary of War, establishing a police agency at Nassau. Gen. W. to send some of his detectives thither to examine persons coming into the Confederate States, and if found “all right,” to give them passports. It was only yesterday that a letter was received from Gen. Whiting, asking authority to send out a secret agent on the “Arabia,” to see what disposition would be made of her cargo, having strong suspicions of the loyalty of the owners and officers of that vessel.