Of all these young devotees of science there was none who equalled in enthusiasm Fritz von Hartmann. It had often seemed strange to his fellow-students that wild, reckless Fritz, as dashing a young fellow as ever hailed from the Rhinelands, should devote the time and trouble which he did in reading up abstruse works and in assisting the Professor in his strange experiments. The fact was, however, that Fritz was a knowing and long-headed fellow. Months before he had lost his heart to young Elise, the blue-eyed, yellow-haired daughter of the lecturer. Although he had succeeded in learning from her lips that she was not indifferent to his suit, he had never dared to announce himself to her family as a formal suitor. Hence he would have found it a difficult matter to see his young lady had he not adopted the expedient of making himself useful to the Professor. By this means he frequently was asked to the old man’s house, where he willingly submitted to be experimented upon in any way as long as there was a chance of his receiving one bright glance from the eyes of Elise or one touch of her little hand. Young Fritz von Hartmann was a handsome lad enough. There were broad acres, too, which would descend to him when his father died. To many he would have seemed an eligible suitor; but Madame frowned upon his presence in the house, and lectured the Professor at times on his allowing such a wolf to prowl around their lamb. To tell the truth, Fritz had an evil name in Keinplatz. Never was there a riot or a duel, or any other mischief afoot, but the young Rhinelander figured as a ringleader in it. No one used more free and violent language, no one drank more, no one played cards more habitually, no one was more idle, save in the one solitary subject. No wonder, then, that the good Frau Professorin gathered her Fräulein under her wing, and resented the attentions of such a _mauvais sujet_. As to the worthy lecturer, he was too much engrossed by his strange studies to form an opinion upon the subject one way or the other. For many years there was one question which had continually obtruded itself upon his thoughts. All his experiments and his theories turned upon a single point. A hundred times a day the Professor asked himself whether it was possible for the human spirit to exist apart from the body for a time and then to return to it once again. When the possibility first suggested itself to him his scientific mind had revolted from it. It clashed too violently with preconceived ideas and the prejudices of his early training. Gradually, however, as he proceeded farther and farther along the pathway of original research, his mind shook off its old fetters and became ready to face any conclusion which could reconcile the facts. There were many things which made him believe that it was possible for mind to exist apart from matter. At last it occurred to him that by a daring and original experiment the question might be definitely decided.