I hesitated for a moment; but how could she possibly tell? The Countess would scarcely have admitted this little romance to anyone; and the mask in the La Vallière costume could not possibly know who the masked domino beside her was.

"I consent," I said, "I promise."

"You must promise on the honor of a gentleman."

"Well, I do; on the honor of a gentleman."

"Then this lady is the Countess de St. Alyre."

I was unspeakably surprised; I was disconcerted; but I remembered my promise, and said:

"The Countess de St. Alyre is, unquestionably, the lady to whom I hoped for an introduction tonight; but I beg to assure you, also on the honor of a gentleman, that she has not the faintest imaginable suspicion that I was seeking such an honor, nor, in all probability, does she remember that such a person as I exists. I had the honor to render her and the Count a trifling service, too trifling, I fear, to have earned more than an hour's recollection."

"The world is not so ungrateful as you suppose; or if it be, there are, nevertheless, a few hearts that redeem it. I can answer for the Countess de St. Alyre, she never forgets a kindness. She does not show all she feels; for she is unhappy, and cannot."

"Unhappy! I feared, indeed, that might be. But for all the rest that you are good enough to suppose, it is but a flattering dream."

"I told you that I am the Countess's friend, and being so I must know something of her character; also, there are confidences between us, and I may know more than you think of those trifling services of which you suppose the recollection is so transitory."