The weird object before them proved to be an innocent guide-board--the article of all others they most needed at that moment. Like the celebrated laws of Nero, however, the _directions_ were posted very high, but Lemon being tall, our hero mounted on his shoulders and by the light of the moon deciphered the inscription. They had now no difficulty in choosing their way. On they pushed therefore; and during the black darkness of the night, crept through the tangled underwood, and over swamps where loathsome, crawling things that shun by day the presence of man, now seemed to seek his acquaintance. How mysterious are these dense untrodden forests of the South! The very air one breathes is living. Throughout the day a million chirping, whirring, twittering sounds, salute the ear. The short grass beneath the forest trees moves, writhes, and creeps with microscopic life, until the brain grows dizzy at the sight. At night it is no less marvellous to hear the myriad denizens of the swamps and woods; and terrible when your tread on some soft, velvety substance reveals a sleeping snake, who, at the same moment, attacks you with his poisonous fang, mayhap, fatally. It is a singular, but well-accredited fact, that these great Southern swamps have been yearly deteriorating, while the surrounding country has been growing in civilization. Old writers tell us that the reptile life now infesting them in such rank luxuriance had scarcely any existence one hundred years ago. Colonel Byrd writes of the "Dismal Swamp:" "Since the surveyors have entered the Dismal Swamp they have seen no living creature; neither bird, beast, insect nor reptile, came to view. Not even a turkey-buzzard will venture to fly over it, no more than the Italian vulture will venture to fly over the filthy lake of Avernus; or the birds of the Holy Land over the Salt Sea where Sodom and Gomorrah once stood." And yet, in the present day, insect and reptile life swarms there in every form through all the hours of the day and night! Our fugitive friends, however, felt little inclination to philosophize upon this subject. The hope of coming liberty strengthened their limbs, and they bent all their energy to the task of moving forward; walking, running, creeping, until the dawn of day approached, when weary and footsore they sought some secure spot and lay down and slept--perchance to dream of "Home, sweet Home"--perchance of "Camp Sorghum," and its "chivalric" guards--perchance of the dreadful blood-hounds whose fatal scent might even then be on their trail! CHAPTER XXI. LOYALTY OF THE NEGROES.