Like the pendulum of an observatory clock, the bob-point of which touches at each vibration the mercury which transmits intelligence of its movements to distant points, Carleton now swung himself to Cincinnati. In Louisville he gave an account, from reports, of the battle of Perryville. It was written in the utmost haste, with one eye upon the hands of his watch moving on to the minute of the closing of the mail. In such a case, according to his custom, he wrote a second letter, when possessed with fuller data from eye-witnesses. In the heart of Kentucky he was able to see the effects of the President's Emancipation Proclamation, which had been issued but three weeks before. He described the coming of the Confederate army into Kentucky as "the Flatterer, dressed in a white garment, who with many fair speeches would have turned Christian and Faithful from the glittering gates of the Golden City, shining serene and fair over the land of Beulah." The robe having dropped from Flatterer's limbs, the Kentuckian saw that the reality was hideous, and that to follow him was to go back again to the City of Destruction. The Confederates moved southward, laden with plunder, while General Buell, with his army of one hundred and forty thousand men, after having mildly pursued them for twenty-one days, returned to Louisville. Carleton's comment upon these movements is, "Such is strategy." Finding himself again in the trough of inactivity, and ever ready to mount on the wave of opportunity, Carleton moved again to the East, writing in the cars while whirling to Virginia. His first letters from the East were penned at Harper's Ferry. Then began his zigzag movements, like a planet. We find his pen active at Berlin, Md., Purcellville, Va., Upperville, Va., where, beside the cavalry battles between Pleasanton and Stewart, he saw that seven corps were in motion. From Gainesville, Warrenton Junction, Orleans, Warrenton, Catlett's Station, and again and often from Washington, and from Falmouth, he sent his letters, which, if not always full of battle, kept the heart of New England patient and courageous.