Now Thurso, as a matter of fact, was the most conscientious and careful of landlords, and these suppositions, though they had seemed hideously real to him yesterday evening, were but morbid creations of his brain, and on them Maud, with her cheerfulness and serenity of spirit, had acted like a charm. She knew well that he had in no detail been neglectful or culpable, and that being certain, she had set herself, not directly to combat his doubts and questionings, but to turn his attention resolutely away from them, just as a wise nurse will direct a patient's attention to some interest alien to his pain, and not, by attempting to prove that pain is only an impression conceived by the brain, let his mind dwell on it. She had said to herself, "Darling old Thurso is terribly depressed. So I must distract his mind by being foolish." So foolish she had been, but yet with art, so that it did not occur to him that she was playing the part of a nurse. And as when David played before Saul to exorcise the evil spirit, so she had played till for the time he forgot his troubles, both real and imaginary, in the charm and gaiety which, though she made deliberate use of them, were yet natural to her. * * * * * To-night, however, the obsession of his fears and despondency seemed to have descended on and infected her, and it needed a long and conscious effort to rid herself of them. For--this might be unreasonable too--she knew at the back of her mind she was very anxious about him. Terrible as the epidemic was, it was producing a disproportionate effect on him; he was taking it too hard and far too self-consciously. From her intimate knowledge of him, and from that instinct which common blood possesses, which can enable a sister to know precisely what a brother is feeling, though to a wife even the knowledge would be vague, she felt that he was strung up almost to breaking-point. But she knew also, with a glow of secret pride in his courage, that nobody but she would have guessed that, unless, perhaps, some skilled observer of nervous symptoms. That from childhood had been the danger of his constitution: he was balanced on so fine an edge, ready to topple over into the gulfs of black despondency; but, with the courage of high breeding, he ever concealed his private hell from the world, turning a brave and tranquil aspect to it, even though he must wear a mask. But for her he wore none, and she often saw his inward torture, when others knew only of a pleasant, courteous man--not gay, but of a manner that denoted quiet enjoyment of the world and habitual serenity.