"I answer for her safety upon my honor.
"Adieu. We are quits.
"VICOMTESSE DE CAMBES."
Canolles read and re-read the letter, shivering with fear at every word, growing paler with every reading; he felt that a mysterious power, which he could not fathom, enveloped him, and directed his actions. Might not this same underground passage, from his bedroom to the Château de Cambes, which was to serve to assure Nanon's safety, serve equally well, if the secret were generally known, to deliver Saint-Georges to the enemy?
Vibrac followed, upon the governor's expressive features, the emotions which were reflected there.
"Bad news, commandant?" he asked.
"Yes, it seems that we are to be attacked again to-night."
"The fanatics!" said Vibrac. "I should have supposed we had given them a sufficient dressing-down, and were not likely to hear of them again for a week at least."
"I have no need to enjoin the strictest watchfulness upon you," said Canolles.
"Have no fear, commandant. Probably they will try to surprise us, as they did before?"
"I have no idea; but let us be ready for anything, and take the same precautions that we took before. Finish my round of inspection for me; I must go to my room; I have some orders to give."
Vibrac touched his hat and strode away with the soldierly indifference to danger often exhibited by those whose profession brings them face to face with it at every step.
Canolles went to his room, taking every possible precaution not to be seen by Nanon; and having made sure that he was alone, locked himself in.
At the head of his bed were the arms of the lords of Cambes, upon a tapestry hanging surrounded by a band of gold.
Canolles raised the band, which was not attached to the tapestry, and disclosed the crack of a door. With the aid of the key which accompanied the viscountess's letter, he opened the door, and found himself confronted by the gaping orifice of a subterranean passage.
For a moment Canolles was struck dumb, and stood motionless, with the sweat pouring from his brow. This mysterious opening into the bowels of the earth terrified him in spite of himself.
He lighted a candle and prepared to inspect it.
First, he descended twenty steep stairs, then kept on down a gentler slope farther and farther into the depths.
Soon he heard a dull, rumbling noise, which alarmed him at first, because he could not think to what cause to attribute it; but as he went forward he recognized it as the roar of the river flowing above his head.
The water had forced its way through the arch in divers places at one time or another, but the crevices had evidently been detected in time and filled with a sort of cement, which became harder in course of time than the stones it bound together.
For about ten minutes Canolles heard the water rolling over his head; then the noise gradually died away until it was hardly more than a murmur. At last even the murmuring ceased, to be succeeded by perfect silence; and after walking a hundred feet or more in the silence, Canolles reached a staircase similar to the one by which he had descended, and closed at the top by a massive door which the united strength of ten men could not have moved, and which was rendered fire-proof by a thick iron plate.
"Now I understand," said Canolles; "she will await Nanon at this door and help her to escape."
He retraced his steps beneath the river-bed, ascended the staircase, re-entered his room, replaced the gold band, and betook himself deep in thought to Nanon's apartments.
IX
Nanon was, as usual, surrounded by maps, letters, and books. In her own way the poor woman was carrying on the war in the king's interest. As soon as she saw Canolles, she gave him her hand joyfully.
"The king is coming," said she, "and in a week we shall be out of danger."
"He is always coming," returned Canolles, with a sad smile; "unfortunately, he never arrives."
"Ah! but this time my information is reliable, my dear baron, and he will surely be here within the week."
"Let him make what haste he may, Nanon, he will arrive too late for us."
"What do you say?"
"I say that instead of wearing yourself out over these maps and papers, you would do better to be thinking of means of escape."
"Of escape? Why so?"
"Because I have bad news, Nanon. A new expedition is preparing, and this time I may be forced to yield."
"Very well, my dear; didn't we agree that I should share your fate and your fortune, whatever they may be?"
"No that cannot be; I shall be too weak, if I have to fear for you. Did they not propose at Agen to burn you at the stake? Did they not try to throw you into the river? Nanon, in pity for me, do not insist upon remaining, for your presence would surely make me do some cowardly thing."
"Mon Dieu, Canolles, you frighten me."
"Nanon, I implore you to give me your word that you will do what I bid you, if we are attacked."
"Why should I make such a promise?"
"To give me the strength to do my duty. Nanon, if you do not promise to obey me blindly, I swear that I will take the first opportunity to seek my own death."
"Whatever you wish, Canolles; I swear it by our love!"
"Thank God! Dear Nanon, my mind is much more at ease now. Get together your most valuable jewels. Where is your money?"
"In a small iron-bound chest."
"Have it all ready. You must take it with you."
"Oh! Canolles, you know that the real treasure of my heart is neither gold nor jewels. Canolles, is this all a mere pretext to send me away from you?"
"Nanon, you deem me a man of honor, do you not? Very good; upon my honor, what I now do is inspired solely by my dread of the danger that threatens you."
"You seriously believe that I am in danger?"
"I believe that Île Saint-Georges will be taken to-morrow."
"How, pray?"
"That I cannot say, but I believe it."
"And suppose I consent to fly?"