“Just imagine such a monster anywhere in this country, and at once we could get a sort of idea of the ‘worms,’ which possibly did frequent the great morasses which spread round the mouths of many of the great European rivers.”

“I haven’t the least doubt, sir, that there may have been such monsters as you have spoken of still existing at a much later period than is generally accepted,” replied Adam. “Also, if there were such things, that this was the very place for them. I have tried to think over the matter since you pointed out the configuration of the ground. But it seems to me that there is is a hiatus somewhere. Are there not mechanical difficulties?”

“In what way?”

“Well, our antique monster must have been mighty heavy, and the distances he had to travel were long and the ways difficult. From where we are now sitting down to the level of the mud-holes is a distance of several hundred feet—I am leaving out of consideration altogether any lateral distance. Is it possible that there was a way by which a monster could travel up and down, and yet no chance recorder have ever seen him? Of course we have the legends; but is not some more exact evidence necessary in a scientific investigation?”

“My dear Adam, all you say say is perfectly right, and, were we starting on such an investigation, we could not do better than follow your reasoning. But, my dear boy, you must remember that all this took place thousands of years ago. You must remember, too, that all records of the kind that would help us are lacking. Also, that the places to be considered were desert, so far as human habitation or population are considered. In the vast desolation of such a place as complied with the necessary conditions, there must have been such profusion of natural growth as would bar the progress of men formed as we are. The lair of such a a monster would not have been disturbed for hundreds—or thousands—of years. Moreover, these creatures must have occupied places quite inaccessible to man. A snake who could make himself comfortable in a quagmire, a hundred feet deep, would be protected on the outskirts by such stupendous morasses as now no longer exist, or which, if they exist anywhere at all, can be on very few places on the earth’s surface. Far be it from me to say that in more elemental times such things could not have been. The condition belongs to the geologic age—the great birth and growth of the world, when natural forces ran riot, when the struggle for for existence was so savage that no vitality which was not founded in a gigantic form could have even a possibility of survival. That such a time existed, we have evidences in geology, but there only; we can never expect proofs such as this age demands. We can only imagine or surmise such things—or such conditions and such forces as overcame them.”

At breakfast-time next morning Sir Nathaniel and Mr. Salton were seated when Adam came hurriedly into the room.

“That is the fact.”

“Now, did you ever see him,” asked the Doctor, distinctly and collectedly, though in the same low voice, “engaged in that pursuit originally?”

“Once.”

“And when the relapse fell on him, him was he in most respects—or in all respects—as he was then?”

“I think in all respects.”

“You spoke of his daughter. Does his daughter know of the relapse?”

“No. It has been kept from her, and I hope will always be kept from her. It is known only to myself, and to one other who may be trusted.”

The Doctor grasped his hand, and murmured, “That was very kind. That was very thoughtful!” Mr. Lorry grasped his hand in return, and neither of the two spoke for a little while.

“Now, my dear Manette,” said Mr. Lorry, at length, in his most considerate and most affectionate way, “I am a mere man of business, business and unfit to cope with such intricate and difficult matters. I do not possess the kind of information necessary; I do not possess the kind of intelligence; I want guiding. There is no man in this world on whom I could so rely for right guidance, as on you. Tell me, how does this relapse come about? Is there danger of another? Could a repetition of it be prevented? How should a repetition of it be treated? How does it come about at all? What can I do for my friend? No man ever can have been more desirous in his heart to serve a friend, than I am to serve mine, if I knew how.

But I don’t know how to originate, in such a case. If your sagacity, knowledge, and experience, could put me on the right track, I might be able to do so much; unenlightened and undirected, I can do so little. Pray discuss it with me; pray enable me to see it a little more clearly, and teach me how to be a little more useful.”

Doctor Manette sat meditating after these earnest words were spoken, and Mr. Lorry did not press him.

“I think it probable,” said the Doctor, breaking silence with an effort, “that the relapse you have described, my dear friend, was not quite unforeseen by its subject.”

“Was it dreaded by him?” Mr. Lorry ventured to ask.

“Very much.” He said it with an involuntary shudder.

“You have no idea how such an apprehension weighs on the sufferer’s mind, and how difficult—how almost impossible—it is, for him to force himself to utter a word upon the topic that oppresses him.”

“Would he,” asked Mr. Lorry, “be sensibly relieved if he could prevail upon himself to impart that secret brooding to any one, when it is on him?”

“I think so. But it is, as I have told you, next to impossible. I even believe it—in some cases—to be quite impossible.”

“Now,” said Mr. Lorry, gently laying his hand on the Doctor’s arm again, after a short silence on both sides, “to what would you refer this attack?”

“I believe,” returned Doctor Manette, “that there had been a strong and extraordinary revival of the train of thought and remembrance that was the first cause of the malady. Some intense associations of a most distressing nature were vividly recalled, I think. It is probable that there had long been a dread lurking in his mind, that those associations would be recalled—say, under certain circumstances—say, on a particular occasion. He tried to prepare himself in vain; perhaps the effort to prepare himself made him less able to bear it.”