he drew it away again his expression was as smiling and as debonair as ever. "But we will not speak of such unpleasant things," said he. "I have only mentioned them so far that you might see that I was not altogether inexcusable in seeking to rid myself of you. In conclusion, I will say that about the time that I located with some accuracy the particular spot where you were living, I also discovered that for which I had been seeking for many years--the underground cell in which was Arnold de Villeneuve's laboratory. This house is built upon the ground whereon his stood. It is a wretched tumble-down affair, mean and squalid, yet I have fitted it up for my home; for, as you have discovered, it connects almost directly with that underground vault where the student and the master discovered their great secret. "Unfortunately, for certain reasons that I need not mention, I could not pass that circle and the sign upon the wall around the door-way. So, not being able to pass it myself, it was a great temptation for me to send you to get those bottles for me, and then, in your destruction, to seal my own security. It was a great temptation, I say, and I yielded to it. What I did was unpleasant to you, perhaps, but that now is all passed and gone. Let it be forgotten, and hereafter we shall, I know, be great friends. That attempt has taught me a lesson. I tried, in spite of fate, to destroy you, and failed; now I will try kindness, and see if that will eliminate you from my life. I have it in my power to make you the richest man in the world--next to myself; and what is more, I will do so, and then we shall separate forever. As for me, I shall live in Paris, for there is no other place in the world for a man of parts like myself. You, upon your part, may live wherever you choose--except in Paris. You shall quit Paris _forever_. Do you understand?--_forever_! Should you be so unfortunate as to ever return here, should you be so unhappy as ever to emerge from your obscurity and cross my path, I will annihilate you. But before I annihilate you I will make you suffer the torments of hell, and wish that you had not been born. Do you understand?" [Illustration: "HE SAW WITHIN AN OVAL MIRROR SET IN A HEAVY FRAME OF COPPER."] Oliver nodded his head. "Very well, then, my child, we comprehend one another. Now I will show you Nicholas Jovus's mirror, which I told you was in my possession. It is a unique curiosity in its way." He rose, and crossing the room to what appeared to be the door of a closet or cabinet, opened it, and showed within a hollow space, partly hidden by a curtain of some heavy black material. Oliver had followed him, and as the master drew back the curtain, he saw within an oval mirror, set in a heavy frame of copper. "Now, Oliver," said the master, "what is it that you would wish to see?"