The swamps tributary to the various branches of the Wicomico river, of which the chief feeder is Allen's creek, bear various names, such as Jordan's swamp, Atchall's swamp, and Scrub swamp. There are dense growths of dogwood, gum, and beech, planted in sluices of water and bog; and their width varies from a half mile to four miles, while their length is upwards of sixteen miles. Frequent deep ponds dot this wilderness place, with here and there a stretch of dry soil, but no human being inhabits the malarious extent; even a hunted murderer would shrink from hiding there. Serpents and slimy lizards are the only denizens; sometimes the coon takes refuge in this desert from the hounds, and in the soil mud a thousand odorous muskrats delve, with now and then a tremorous otter. But not even the hunted negro dares to fathom the treacherous clay, nor make himself a fellow of the slimy reptiles which reign absolute in this terrible solitude. Here the soldiers prepared to seek for the President's assassin, and no search of the kind has ever been so thorough and patient. The Shawnee, in his strong hold of despair in the heart of Okeefeuokee, would scarcely have changed homes with Wilkes Booth and David Harold, hiding in this inhuman country. The military forces deputed to pursue the fugitives were seven hundred men of the Eighth Illinois cavalry, six hundred men of the Twenty-second Colored troops, and one hundred men of the Sixteenth New York. These swept the swamps by detachments, the mass of them dismounted, with cavalry at the belts of clearing, interspersed with detectives at frequent intervals in the rear. They first formed a strong picket cordon entirely around the swamps, and then, drawn up in two orders of battle, advanced boldly into the bogs by two lines of march. One party swept the swamps longitudinally, the other pushed straight across their smallest diameter. A similar march has not been made during the war; the soldiers were only a few paces apart, and in steady order they took the ground as it came, now plunging to their arm-pits in foul sluices of gangrened water, now hopelessly submerged in slime, now attacked by Regions of wood ticks, now tempting some unfaithful log or greenishly solid morass, and plunging to the tip of the skull in poison stagnation; the tree boughs rent their uniforms; they came out upon dry land, many of them without a rag of garment scratched, and gashed, and spent, repugnant to themselves, and disgusting to those who saw them; but not one trace of Booth or Harold was any where found. Wherever they might be, the swamps did not contain them.