Farther to the south were low hills followed by a long mountain of beautiful shape,--Pigeon Mountain, I heard it called,--with elevations at each end and in the middle. And so my eye made the round of the horizon, hill after hill in picturesque confusion, till it returned to Missionary Ridge, with Walden's Ridge rising beyond, and Lookout Point on the left: a charming prospect, especially for its atmosphere and color. The hard woods, with dark pines everywhere among them to set them off, were just coming into leaf, with all those numberless, nameless, delicate shades of green that make the glory of the springtime. The open fields were not yet clear green,--if they ever would be,--but green and brown intermixed, while the cultivated hillsides, especially on Missionary Ridge, were of a deep rich reddish-brown. The air was full of beautifying haze, and cumulus clouds in the south and west threw motionless shadows upon the mountain woods. Around me, in different parts of the battlefield, were eight or ten houses and cabins, the nearest of them, almost at my feet, being the Snodgrass house, famous as the headquarters of General Thomas, the hero of the fight,--the "Rock of Chickamauga,"--who saved the Union army after the field was lost. All was peaceful enough there now, with the lines full of the week's washing, which a woman under a voluminous sunbonnet was at that moment taking in (in that sun things would dry almost before the clothes-pins could be put on them, I thought), while a red-gowned child, and a hen with a brood of young chickens, kept close about her feet. Her husband, like the occupant of the Kelly house, was no doubt one of the government laborers, who to-day were burning refuse in the woods,--invisible fires, from each of which a thin cloud of blue smoke rose among the trees. The Dyer house, in a direction nearly opposite the Snodgrass house, stood broadly in the open, with an orchard behind it, and dark savins posted here and there over the outlying pasture. Even at noonday the air was full of music: first an incessant tinkle of cow-bells rising from all sides, wondrously sweet and soothing; then a continuous, far-away hum, like a sawmill just audible in the extreme distance, or the vibration of innumerable wires, miles remote, perhaps,--a noise which I knew neither how to describe nor how to guess the origin of, the work of seventeen-year locusts, I afterward learned; and then, sung to this invariable instrumental accompaniment,--this natural pedal point, if I may call it so,--the songs of birds.