13th.—Beautiful day; and all quiet. What a pity that we must lose this fine weather. Already, as I predicted, I can hear many of McClellan’s friends, who were depressed yesterday, admitting that he had failed, and expressing their gratification at the change of Commanders. It will go hard only with the aspirants in high places, who have spent so much time and breath in inflating McClellan, that he became an unmanageable balloon, broke from his fastenings, and has “gone up.” Can we trust that they will not betray Burnside, as some of them did Pope. I confess that I am apprehensive on this point.