Von Apsberg said with a smile, "such an eulogium as the Vicomte's would, a few centuries ago, have sent me to the stake. Fortunately there is now no danger of that, for there is no longer any faith in magicians. Rightly enough, too, for if not so, there would be no glory and advantage in wisdom. _Savans_ are fond of their privileges. For my own part, though no philosopher, I do not deal in magic, though from study I have learned that there are secret agents in nature too much neglected even now, though much good has resulted and the most marvellous effects have been produced from them. Of these agents, the magnetic fluid is the surest, the most active and powerful. Like all other imponderable fluids, it is invisible, passing through space perhaps with the rapidity of light, though unlike the latter, its passage is not interrupted by the opposition of opaque bodies, which it penetrates as caloric does.[F] I do not pretend, Duke," continued Von Apsberg, "to teach you the theory of magnetism, but at all risks to justify your confidence in me, which now induces you to confide so precious a trust to me. As an honest man I think I am not deceived in the hope I expressed at my first visit, that your daughter, from my system of action, will acquire that vital force which will enable her to overcome her natural weakness, and thus reach the period of life when, age coming to aid nature, she will acquire a degree of health which will bid defiance to all the accidents of youth and assure her a healthy life in future. I call God to witness that I act with a heartfelt conviction and religious sincerity. I will, though, swear, that if in a short time I see no evidence of the efficacy of my remedy, I will inform you of the fact without delay." "I am sure, sir, you will. I confide in your honor as I do in your skill." "Father," said the Vicomte, "you are right to do so. The doctor is a brother to me, and looks on Marie almost as a sister." Both the doctor and Marie now blushed. No one though remarked it, for just then the Prince and _Marquise_ de Maulear were announced. The Duke said: "They are friends and need not disturb you." Aminta loved Marie d'Harcourt. These two beautiful women had conceived a deep affection for each other. Aminta, though, who was a few years older than Marie, and had a right to more gravity, as a married woman, matronized the young girl, and it was rather an amusing picture to see a mother twenty years old, _chaperoning_ a daughter of seventeen and explaining the peculiarities of a life they were equally ignorant of. "Prince," said the Duke, "Doctor Matheus is a famous magnetist, who has been serviceable to Marie already, and when you came in was about to subject her again to the influence of the fluid."