Wherefore, then and there, Miss Nitocris Marmion, Bachelor of Science, Licentiate of Literature and Art, and Gold-Medallist in Higher Mathematics at the University of London, decided upon her first experiment in match-making. When the Professor got into his study and shut the door, there was a curious smiling expression upon his refined, intellectual features. Instead of sitting down to his desk, he lit a pipe and began walking up and down the room, communing with his own soul in isolated sentences, as was his wont when he was trying to arrive at any difficult decision. In order to appreciate his deliberations and their result, it will be necessary to say that Professor Hoskins van Huysman was one of the most distinguished physicists in America, and he had also gained distinction in applied mathematics. In addition to this, he was the inventor of many marvellous contrivances for the demonstration and measurement of the more obscure physical forces. His official position was that of Lecturer and Demonstrator in Physical Science in Harvard University. He and Professor Marmion had been deadly opponents in the field of controversy for years. The latter had once detected an error in a very learned monograph which he had published in the _Scientific American_ on the "Co-Relation of the Etheric Forces in the Phenomena of Light and Heat," and of course he had never forgiven him. From that day forth a relentless duel of wits between them had continued. Every essay, monograph, or book that the one published, the other criticised with cold but ruthless severity, to the great delectation of the scientific world, if not to the clarification of its atmosphere. Socially, they were cordial acquaintances, if not friends. What they really thought of each other was known only to themselves and to their immediate domestic circles. Naturally Professor Marmion was well aware that his elevation to the higher plane of N4 gave him an enormous advantage over his adversary, for now he could, if he chose, smite him hip and thigh, in a strictly scientific sense, and reduce him to utter confusion and public ridicule, and the question which he had come to discuss with himself was: In how far, if at all, was he justified in so using the extra-human powers with which he had been endowed? The moment that he began to do this he became conscious of another curious complication of his recent development. On the higher plane he had argued the matter out with no more emotion than a calculating machine would have betrayed, and he had come to a conclusion that was absolutely luminous and just: but now that he came to argue the same question on the lower plane he found that he was doing it under human limitations, and therefore with human feelings.