“Of course it might, and probably was. I never thought of that. Is there any possible way of guessing approximately how long a scent will remain? You see, this is a natural scent, and may derive from a place where it has been effective for thousands of years. Then, does a scent of any kind carry with it any form or quality of another kind, either good or evil? I ask you because one ancient name of the house lived in by the lady who was attacked by the mongoose was ‘The Lair of the White Worm.’ If any of these things be so, our difficulties have multiplied indefinitely. They may even change in kind. We may get into moral entanglements; before we know it, we may be in the midst of a struggle between good and evil.”

Sir Nathaniel smiled gravely.

“With regard to the first question—so far as I know, there are no fixed periods for which a scent may be active—I think we may take it that that period does not run into thousands of years. As to whether any moral change accompanies a physical one, I can only say that I have met no proof of the fact. At the same time, time we must remember that ‘good’ and ‘evil’ are terms so wide as to take in the whole scheme of creation, and all that is implied by them and by their mutual action and reaction. Generally, I would say that in the scheme of a First Cause anything is possible. So long as the inherent forces or tendencies of any one thing are veiled from us we must expect mystery.”

“There is one other question on which I should like to ask your opinion. Suppose that there are any permanent forces appertaining to the past, what we may call ‘survivals,’ do these belong to good as well as to evil? For instance, if the scent of the primaeval monster can so remain in proportion to the original strength, can the same be true of things of good import?”

Sir Nathaniel thought for a while before he answered.

“We must be careful not to confuse the physical and the moral. I can see that already you have switched on the moral entirely, so perhaps we had better follow it up first. On the side of the moral, we have certain justification for belief in the utterances of revealed religion. For instance, ‘the effectual fervent prayer of a righteous man availeth much’ is altogether for good. We have nothing of a similar kind on the side of evil. But if we accept this dictum we need have no more fear of ‘mysteries’: these become thenceforth merely obstacles.”

Adam suddenly changed to another phase of the subject.

“And now, sir, may I turn for a few minutes to purely practical things, or rather to matters of historical fact?”

Sir Nathaniel bowed acquiescence.

“We have already spoken of the history, so far as it is known, of some of the places round us—‘Castra Regis,’ ‘Diana’s Grove,’ and ‘The Lair of the White Worm.’ I would like to ask if there is anything not necessarily of evil import about any of the places?”

“But you are not English,” said the wood–sawyer, “though you wear English dress?”

“Yes,” said Carton, pausing again, and answering over his shoulder.

“You speak like a Frenchman.”

“I am an old student here.”

“Aha, a perfect Frenchman! Good night, Englishman.”

“Good night, citizen.”

“But go and see that droll dog,” the little man persisted, calling after him. “And take a pipe with you!”

Sydney had not gone far out of sight, when he stopped in the middle of the street under a glimmering lamp, and wrote with his pencil on a scrap of paper. Then, traversing with the decided step of one who remembered the way well, several dark and dirty streets—much dirtier than usual, for the best public thoroughfares remained uncleansed in those times of terror—he stopped at a chemist’s shop, which the owner was closing with his own hands. A small, dim, crooked shop, kept in a tortuous, up–hill thoroughfare, by a small, dim, crooked man.

Giving this citizen, too, good night, as he confronted him at his counter, he laid the scrap of paper before him. “Whew!” the chemist whistled softly, as he read it. “Hi! hi! hi!”

Sydney Carton took no heed, and the chemist said:

“For you, citizen?”

“For me.”

“You will be careful to keep them separate, citizen? You know the consequences of mixing them?”

“Perfectly.”

Certain small packets were made and given to him. He put them, one by one, in the breast of his inner coat, counted out the money for them, and deliberately left the shop. “There is nothing more to do,” said he, glancing upward at the moon, “until to–morrow. I can’t sleep.”

It was not a reckless manner, the manner in which he said these words aloud under the fast–sailing clouds, nor was it more expressive of negligence than defiance. It was the settled manner of a tired man, who had wandered and struggled and got lost, but who at length struck into his road and saw its end.

Long ago, when he had been famous among his earliest competitors as a youth of great promise, he had followed his father to the grave. His mother had died, years before. These solemn words, which had been read at his father’s grave, arose in his mind as he went down the dark streets, among the heavy shadows, with the moon and the clouds sailing on high above him. “I am the resurrection and the life, saith the Lord: he that believeth in me, though he were dead, yet shall he live: and whosoever liveth and believeth in me, shall never die.”

In a city dominated by the axe, alone at night, with natural sorrow rising in him for the sixty–three who had been that day put to death, and for to–morrow’s victims then awaiting their doom in the prisons, and still of to–morrow’s and to–morrow’s, the chain of association that brought the words home, like a rusty old ship’s anchor from the deep, might have been easily found. He did not seek it, but repeated them and went on.