I do not yet know the reason of this sudden relaxation of vigilance. Perhaps it was because all their attention was directed to Huntsville, which was now occupied in force by General Mitchel. The panic produced by this occupation was immense, as the only communication it left them with Beauregard was by the circuitous route through Atlanta, and when, the next day, this too was endangered, their excitement knew no bounds. Chattanooga is a small town--not much more than a village. It is pleasantly situated on the banks of the Tennessee, and is bowered in amidst lofty mountain peaks. One of these hangs right over the town, and is more than seven hundred feet in perpendicular hight. From its summit parts of four States are visible--Tennessee, Georgia, Alabama, and North Carolina. It is capable of being very strongly fortified; and though there were no works erected when I was there, many may have been built since. It is one of the most important strategic points in the whole South, and should have been in the possession of our forces long ago. From the river we went directly to the depot. Some of our party had arrived earlier, and gone down to Marietta on a former train. We found the cars nearly ready to start, and after loitering around a few minutes in the depot, which was crowded full of travelers--mostly soldiers--we purchased our tickets and got aboard. The cars were jammed full. There was scarcely room to stand. Many of the passengers were soldiers who had been at home on furlough, and were returning to join Beauregard. The conversation was mostly on the great battle which had just been fought, and the accounts were by no means so glowing as they had been at first; still they announced a great victory. We took part in the conversation, and expressing as much interest as any one, our true character was not suspected. There was at this time no system of passports in use on that line, and travel was entirely unrestricted. The sun was about an hour high as we glided out of the depot, and soon sunk to rest behind the hills of Georgia. There were many bridges on the road, and as we passed over them, we could not help picturing to ourselves our proposed return on the morrow, and the probabilities of the destruction we intended to wreck on them. Darkness gradually closed in, and on we went amid the laughter and oaths of the Confederates, many of whom were very much intoxicated. I procured a seat on the coal-box, and for awhile gave myself up to the reflections naturally suggested by the near culmination of the enterprise in which I was engaged. Visions of former days and friends--dear friends, both around the camp-fire and by the hearth of home, whom I might never see again, floated before me. But gradually, as the night wore on, these faded, and I slept.