Sunday, January 29th, 1865.HAVE been in Armory-square this afternoon. The wards are very comfortable, new floors and plaster walls, and models of neatness. I am not sure but this is a model hospital after all, in important respects. I found several sad cases of old lingering wounds. One Delaware soldier, William H. Mills, from Bridgeville, whom I had been with after the battles of the Wilderness, last May, where he receivd a very bad wound in the chest, with another in the left arm, and whose case was serious (pneumonia had set in) all last June and July, I now find well enough to do light duty. For three weeks at the time mentiond he just hovered between life and death.