He was a sort of medical detective, working all for love, and nothing for reward, without fee, and in many cases without even the high pleasure of carrying out his views. He had the eye of a hawk for anything wrong in the complexion or aspect of those who fell under his observation. The very postman at the door, whom Dr. Roland had met two or three times as he went out for his constitutional in the morning, had been divined and cut open, as it were, by his lancet of a glance, and saved from a bad illness by the peremptory directions given to him, which the man had the sense (and the prudence, for it was near Christmas) to obey. In that case the gratuity passed from doctor to patient, not from patient to doctor, but was not perhaps less satisfactory on that account. Then Dr. Roland would seize Jenny or Molly by the shoulders when they timidly brought a message or a letter into his room, look into the blue of their eyes for a moment, and order a dose on the spot; a practice which made these innocent victims tremble even to pass his door. “Oh, granny, I can’t, I can’t take it up to the doctor,” they would say, even when it was a telegram that had come: little selfish things, not thinking what poor sick person might be sending for the doctor; nor how good it was to be able to get a dose for nothing every time you wanted it. But most of the people whom he met were less easily manageable than the postman and the landlady’s little granddaughters. Dr. Roland regarded every one he saw from this same medical point of view; and had made up his mind about Miss Bethune, and also about Mr. Mannering, before he had been a week in the house. Unfortunately, he could do nothing to impress his opinion upon them; but he kept his eyes very wide open, and took notes, attending the moment when perhaps his opportunity might occur. As for Dora, he had nothing but contempt for her from the first moment he had seen her. Hers was a case of inveterate good health, and wholly without interest. That girl, he declared to himself scornfully, would be well anywhere. Bloomsbury had no effect upon her. She was neither anæmic or dyspeptic, though the little things downstairs were both. But her father was a different matter. Half a dozen playful demons were skirmishing around that careful, temperate, well-living man; and Dr. Roland took the greatest interest in their advances and withdrawals, expecting the day when one or other would seize the patient and lay him low. Miss Bethune, too, had her little band of assailants, who were equally interesting to Dr. Roland, but not equally clear, since he was as yet quite in the dark as to the moral side of the question in her case.