He passed a few yards to one side of them, and stumbled over a heap of something which he did not observe, as it was black like the level ground. It emitted a metallic sound, and looking he saw that he had kicked his foot against a great heap of money. The coins were black as ink; he picked up a handful and went on. Hitherto Felix had accepted all that he saw as something so strange as to be unaccountable. During his advance into this region in the canoe he had in fact become slowly stupefied by the poisonous vapour he had inhaled. His mind was partly in abeyance; it acted, but only after some time had elapsed. He now at last began to realize his position; the finding of the heap of blackened money touched a chord of memory. These skeletons were the miserable relics of men who had ventured, in search of ancient treasures, into the deadly marshes over the site of the mightiest city of former days. The deserted and utterly extinct city of London was under his feet. He had penetrated into the midst of that dreadful place, of which he had heard many a tradition: how the earth was poison, the water poison, the air poison, the very light of heaven, falling through such an atmosphere, poison. There were said to be places where the earth was on fire and belched forth sulphurous fumes, supposed to be from the combustion of the enormous stores of strange and unknown chemicals collected by the wonderful people of those times. Upon the surface of the water there was a greenish-yellow oil, to touch which was death to any creature; it was the very essence of corruption. Sometimes it floated before the wind, and fragments became attached to reeds or flags far from the place itself. If a moorhen or duck chanced to rub the reed, and but one drop stuck to its feathers, it forthwith died. Of the red water he had not heard, nor of the black, into which he had unwittingly sailed. Ghastly beings haunted the site of so many crimes, shapeless monsters, hovering by night, and weaving a fearful dance. Frequently they caught fire, as it seemed, and burned as they flew or floated in the air. Remembering these stories, which in part, at least, now seemed to be true, Felix glanced aside, where the cloud still kept pace with him, and involuntarily put his hands to his ears lest the darkness of the air should whisper some horror of old times. The earth on which he walked, the black earth, leaving phosphoric footmarks behind him, was composed of the mouldered bodies of millions of men who had passed away in the centuries during which the city existed. He shuddered as he moved; he hastened, yet could not go fast, his numbed limbs would not permit him.