"I shall be married at the registrar's," he remarked; "I should strongly recommend you to do the same." Professor Ainslie Grey was as good as his word. A fortnight's cessation of his classes gave him an opportunity which was too good to let pass. Mrs. O'James was an orphan, without relations and almost without friends in the country. There was no obstacle in the way of a speedy wedding. They were married, accordingly, in the quietest manner possible, and went off to Cambridge together, where the Professor and his charming wife were present at several academic observances, and varied the routine of their honeymoon by incursions into biological laboratories and medical libraries. Scientific friends were loud in their congratulations, not only upon Mrs. Grey's beauty, but upon the unusual quickness and intelligence she displayed in discussing physiological questions. The Professor was himself astonished at the accuracy of her information. "You have a remarkable range of knowledge for a woman, Jeannette," he remarked upon more than one occasion. He was even prepared to admit that her cerebrum might be of the normal weight. One foggy, drizzling morning they returned to Birchespool, for the next day would reopen the session, and Professor Ainslie Grey prided himself upon having never once in his life failed to appear in his lecture-room at the very stroke of the hour. Miss Ada Grey welcomed them with a constrained cordiality, handed over the keys of office to the new mistress. Mrs. Grey pressed her warmly to remain, but she explained that she had already accepted an invitation which would engage her for some months. The same evening she departed for the south of England. A couple of days later the maid carried a card just after breakfast into the library where the Professor sat revising his morning lecture. It announced the rearrival of Dr. James M'Murdo O'Brien. Their meeting was effusively genial on the part of the younger man, and coldly precise on that of his former teacher. "You see there have been changes," said the Professor. "So I heard. Miss Grey told me in her letters, and I read the notice in the _British Medical Journal_. So it's really married you are. How quickly and quietly you have managed it all!" "I am constitutionally averse to anything in the nature of show or ceremony. My wife is a sensible woman--I may even go the length of saying that, for a woman, she is abnormally sensible. She quite agreed with me in the course which I have adopted." "And your research on Vallisneria?" "This matrimonial incident has interrupted it, but I have resumed my classes, and we shall soon be quite in harness again." "I must see Miss Grey before I leave England. We have corresponded, and I think that all will be well. She must come out with me. I don't think I could go without her." The Professor shook his head.