Every doctor is asked for advice in matrimonial differences, or at any rate is made a confidant. One can have too many of such confidences; but I defy any general practitioner, however brusque and curmudgeonly, to escape them altogether. Most of us have seen so many couples that we can tell at a glance what is wrong—which brand of incompatibility is in use. For there are so many. Temper is supposed to have a monopoly in this matter, but that is far from the case. There can be incompatibility in other matters, apparently trifling, and trifling in fact unless lifelong fetters are involved. Incompatibility of temperature, for example, where the lute is rifted because the wife wants all the fresh air that windows and doors can let in, and the husband rejoices only in a vacuum. A doctor sees so many of such antipodal house-mates—I don’t say that all are married people—that he comes to divide the world into those who are healthily disposed and those whose only idea of a window is a thing to shut. It is a truism that wedded felicity is a very fragile craft, liable to be swamped by any unforeseen wave, and it requires the most delicate seamanship, both at the helm and at the sail. I have seen marriages ruined by so pleasant a spice to ordinary intercourse as irony. Irony in a husband, and a tendency in a wife to depreciate her husband or make him a butt in public—these have much misery to answer for. Absence of mind in a husband can be fatal: an inability to look ahead, to reserve seats, to order a cab, to remember theatre tickets. And then, again, over-much presence of mind can be fatal too: an insistence on punctuality and too much officiousness about the house. I could not tell which was the cause of the want of sympathy between Rose and Eustace, but I felt something was wrong almost directly I entered their door. Outwardly they were pleasant enough together; but there was no warmth in the air, no electricity. Rose Holt was not Rose Allinson—very far from it. But she was sweeter than ever to me; almost I could bring myself to be glad that all was not well, for it made her so tender, so thoughtfully attentive, to her old friend. It was the Rose of the middle teens over again, but with a richness and maturity added. Eustace was courteous, a solicitous host, and I felt spoilt between them. But there was something wrong. When their eyes met across the table no light kindled. It was a comfortable, distinguished house. The furniture was good. The right books were scattered about, some in French; the right periodicals. Photographs after the Old Masters. In Rose’s little boudoir were water colours. After dinner Eustace left us. He had some difficult papers to go through and master, and we were left alone. Rose established me by the fire and sat beside me on a cushion. “Is all well with my child?” I asked. She did not reply.