'Follow me, then,' said the Doctor, taking up the lamp, and hurrying up the dungeon steps; he led the way, at a rapid pace, up another high flight of steps, to a point which overlooked the city sewers. By the dim light of the lamp, Frank saw, twenty feet below, the dark, sluggish and nauseous stream of the filthy drainings of the vast city overhead, which, running thro' holes under the edges of the sidewalk, collect in these immense subterranean reservoirs, and are slowly discharged into the river. 'Leap boldly after me--you will land in the mud, and break no bones,' said the Doctor--'our enemies are at our heels!' A fact that was demonstrated by the sound of many footsteps hurrying rapidly towards them. The Doctor leaped into the dark and terrible abyss. Sydney heard the splash of his fall into the muddy water, and nerving himself for the deed, jumped in after him; he sank up to his chin in the loathsome pool. His friend grasped his hand, and whispered--'We are now safe from our pursuers, unless they follow us, which is hardly probable; for I confess these sewers are so full of horrors, that even those villains would hesitate to pass through them, unless under circumstances as desperate as ours.' Frank shuddered. 'Will they not fire upon us?' he asked. The Doctor answered:-- 'No, they dare not; for the noise of fire-arms would be heard in the streets above, and people might be led to inquire into the cause of such a phenomena. Fortunately my lamp is not extinguished, and as the mud is not over our heads, we may make our way out of this infernal trap, provided we are not devoured by rats and reptiles, which swarm here. Ah, by Jupiter, there are our pursuers!' And as he spoke, some fifteen or twenty men appeared above them, on the point from which they had jumped. On seeing the fugitives, they setup a shout of surprise and anger. 'A pretty trick you've served us, Doctor,' called out the fellow known as Bloodhound--'you've nearly roasted the Dead Man, and carried off his prisoner; however, we rescued our Captain just in time to save his life. You had better come back, or we'll blow your brains out!'--and he levelled a pistol. 'Blow and be d----d,' coolly remarked the Doctor, who knew very well that he dare not fire--'come, Mr. Sydney, follow me, and leave these fellows to talk to the empty air.' With much difficulty the two fugitives began to move off through the mud and water. 'What, cowards, will you let them escape before your eyes?' roared the Dead Man, as he rushed up to the brink of the chasm, and glared after Sydney and his friend with flaming eyes. 'Plunge in after them, and bring them back, or by G----every man of you shall die the death of a dog!' Not a man stirred to obey the order; and the miscreant would have leaped into the sewers himself, had they not forcibly held him back.