For some time Marston did not sleep. As a rule, he did not indulge his imagination, but he had been disturbed by the agent's tale and there were strange noises. Some he thought were made by cracking boards and falling damp; others puzzled him and he found them daunting in the dark. They were like footsteps, as if somebody stole about the rooms. Marston had had enough of Africa and yet he owned the country had a mysterious charm. White men stayed, knowing the risk they ran and without much hope of money reward, until they died of fever or their minds got deranged. The latter happened now and then. In order to keep sane, one must concentrate on one's business and refuse to speculate about the secret life of the bush. After all, there was much to speculate about---- Marston pulled himself up. He was a sober white man and had nothing to do with the negro's fantastic superstitions. Magic and witchcraft were ridiculous, but in a country where they were a ruling force it was not easy to laugh. He thought Rupert Wyndham had made rash experiments and had dared too much, and although this was perhaps not important, Harry had his uncle's temperament. The trouble was there. Still they would leave the river soon and it would be a relief to go to sea. The sea was clean and bracing. Three or four days afterwards _Columbine_ dropped down stream on the ebb. A big naked Krooboy held the wheel, another in the fore-channels swung the lead and called the depth in a musical voice. The white factory got indistinct and melted into the swamps, the puffs of wind were fresher, and Marston was conscious of a keen satisfaction as the dreary mangroves slipped astern and yellow sand and lines of foam came into view ahead. Wyndham, smoking a cigarette, leaned against the rail. He wore white duck without a crease and a big pale-gray hat. Marston thought he looked very English, with his keen blue eyes, light hair, and red skin, but his gaze was contemplative. "You're not sorry to get away?" he presently remarked. "I wonder whether Rupert Wyndham was." "I wonder why he stayed," said Marston. "Unless, of course, he was earning money." "A plausible explanation, but I'm not sure it's good," Wyndham replied with a smile. "The head of our house was often extravagant but never, I think, a miser. We're not a greedy lot." "You were traders; the object of trading is to get rich." "I doubt if this was my uncle's, or some of my other ancestors' object, I think they valued money for what it would buy. Anyhow, they seldom kept it long." "Since most of us value money for what it will buy, I don't understand," Marston rejoined. "You bought a country house, a sober sportsman's life, and the liking of honest friends. Well, your investments were sound, but there are men of other temperaments they mightn't satisfy. I don't think they would have satisfied Rupert Wyndham." "Then what did he expect to get in the swamps?"