General Mitchell departed for Washington yesterday.

The rebels at Chattanooga claim that McClellan has been terribly whipped, and fired guns along their whole line, within hearing of our troops, in honor of the victory.

A lieutenant of the Nineteenth Illinois, who fell into the enemy's hands, has just returned on parole, and claims to have seen a dispatch from the Adjutant-General of the Southern Confederacy, stating that McClellan had been defeated and his army cut to pieces. He believes it.

My horse is as fat as a stall-fed ox. He has had a very easy time during my absence.

To-morrow is the Fourth, hitherto glorious, but now, like to-day's meridian sun, clouded, and sending out a somewhat uncertain light. Has the great experiment failed? Shall we hail the Fourth as the birthday of a great Nation, or weep over it as the beginning of a political enterprise which resulted in dissolution, anarchy and ruin? Let us lift up our eyes and be hopeful. The dawn may be even now breaking.

The boys propose to have a barbecue to-morrow, and roast a corpulent, good-natured Ethiopian, named Cæsar. They are now discussing the matter very voluminously, in Cæsar's presence. He thinks they are probably joking; but still they seem to be greatly in earnest, and he knows little of these Yankees, and thinks maybe his "massa tole him de truff about dem, after all." "The Fourth is a great day," the boys go on to say, "whereon Yankees always dine on roast nigger. It is a part of their religion. It is this which makes colored folks so scarce in the North." Shall Cæsar be stuffed or not? That is really the only question. One party claims that if Cæsar be stuffed with vegetables and nicely roasted, he will be delicious. The other party insists that Cæsar is sufficiently stuffed already; vegetables would not improve him. They have eaten roast nigger both ways and know. So the discussion waxes hot, and the dusky Alabamian has some fear, even, that his last day may be drawing very near.

4. Thirty-four guns were fired at noon.

5. An Atlanta paper of the 1st instant says the Confederates have won a decisive victory at Richmond. No Northern papers have been allowed to come into camp.

6. McCook moved toward Chattanooga. General W. S. Smith has command of our division.

The boys have a great many game chickens. Not long ago Company G, of the Third, and Company G, of the Tenth, had a rooster fight, the stakes being fifteen dollars a side. After numerous attacks, retreats, charges, and counter-charges, the Tenth rooster succumbed like a hero, and the other was carried in triumph from the field. General Mitchell made his appearance near the scene at the conclusion of the conflict; but, supposing the crowd to be an enthusiastic lot of soldiers who were cheering him, passed on, well pleased with them and himself.