May 21st.—There was a rumor on the street last night that Gen. Johnston had telegraphed the President that it would be necessary to evacuate Vicksburg. This has not been confirmed to-day, and I do not believe it. It would be irremediably disastrous.

Mr. N. S. Walker writes from Bermuda, May 11th, 1863, that seventeen additional British regiments have been ordered to Canada. A large amount of ordnance and ordnance stores, as well as several war steamers, have likewise been sent thither. He states, moreover, that United States vessels are having their registers changed. Does this really mean war?

Strawberries were selling in market this morning at $4 for less than a pint. Coal $25 per load, and wood $30 per cord.

May 22d.—A letter from Gen. Howell Cobb, declining the offer of the Secretary of War, of the position of Quartermaster-General, was received to-day. His wife is ill, and he prefers to remain with her; besides, he doubts his qualifications—he, who was Secretary of the Treasury of the United States! He says, moreover, referring to the imperfect ordnance stores of his brigade, that there can be no remedy for this so long as Col. G. is the Chief of the Bureau of Ordnance. So Col. Myers is to be disposed of at last, and Col. G. has but an uncertain tenure.

We have sad rumors from Vicksburg. Pemberton, it is said, was flanked by Grant, and lost 30 guns, which he abandoned in his retreat. Where Johnston is, is not stated. But, it is said, Vicksburg is closely invested, and that the invaders are closing in on all sides. There is much gloom and despondency in the city among those who credit these unofficial reports. It would be a terrible blow, but not necessarily a fatal one, for the war could be prolonged indefinitely.

I met with Robt. Tyler to-day, who offers to wager something that Gen. Stuart will be in Philadelphia in a fortnight, and he said there was a proposition to stop the publication of newspapers, if the President would agree to it, as they gave information to the enemy, and at such a time as this did no good whatever. He thinks they are on the eve of revolution in the North, and referred to Gov. Seymour’s letter, read at a public meeting in New York.

May 23d.—The reports from Mississippi have not been confirmed by official dispatches, and it is understood that the President remarked yesterday, at dinner, that he was satisfied with the condition of affairs in that State. If this be so, Vicksburg must not only be still in our possession, but likely to be held by us at the end of this campaign. The President, I know, feels a peculiar interest in that State, and I learn by a letter from Tennessee, that on the 9th inst. troops left McMinnville for the rescue of Vicksburg—a Texas brigade.

Cavalry continue to pass through this city from the south, while infantry are passing to the south. These movements will puzzle the spies, who are daily, and without difficulty, obtaining passports to leave the Confederate States.

We have Northern papers to-day, containing Gen. Hooker’s grandiloquent address to his army, a few days after his flight. I preserve it here for the inspection of the future generation, and to deter other generals from the bad policy of publishing false statements.

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