Mervyn's moods were the subject of many a quiet joke among the young officers of the regiment. Some declared that he must have committed a murder somewhere, and was occasionally troubled in his conscience; while some insisted that Mervyn's strange behaviour was only assumed in order that he might be the more appreciated at other times. Among the two or three officers of the regiment who came from that part of the country, and knew something of the family history of the Mervyns, it was whispered that he had inherited some slight share of the curse of the Carnes. Not that he was mad in the slightest degree--no one would think of saying that of Ronald Mervyn--but he had certainly queer moods. Perhaps the knowledge that there was a taint in his blood affected him, and in course of time he began to brood over it. When this mood was on him, soon after joining the regiment, he himself had spoken to the doctor about it. "Do you know, doctor, I am a horrible sufferer from liver complaint?" "You don't look it, Mervyn," the surgeon replied; "your skin is clear, and your eye is bright. You are always taking exercise, your muscles are as hard as nails. I cannot believe that there is much the matter with you." "I assure you, doctor, that at times for two or three days I am fit for nothing. I get into such a state that I am not fit to exchange a word with a human being, and could quarrel with my best friend if he spoke to me. I have tried all sorts of medicines, but nothing seems to cure me. I suppose it's liver; I don't know what else it can be. I have spoken about it to the Major, and asked him if at any time he sees me look grumpy, to say a word to the mess, and ask them to leave me to myself; but I do wish you could give me something." The doctor had recommended courses of various foreign waters, and had given him instructions to bathe his head when he felt it coming on; but nothing had availed. Once a year, or sometimes oftener, Ronald retired for two or three days, and then emerged as well and cheerful as before. Once, when the attack had been particularly severe, he had again consulted the doctor, this time telling him the history of his family on his mother's side, and asking him frankly whether he thought these periodical attacks had any connection with the family taint. The doctor, who had already heard the story in confidence from one of the two men who knew it, replied: