"Sigsbee Manderson was not a man of normal mind," Marlowe began in his quiet voice. "Most of the very rich men I met with in America had become so by virtue of abnormal greed, or abnormal industry, or abnormal personal force, or abnormal luck. None of them had remarkable intellects. Manderson delighted too in heaping up wealth; he worked incessantly at it; he was a man of dominant will; he had quite his share of luck; but what made him singular was his brain-power. In his own country they would perhaps tell you that it was his ruthlessness in pursuit of his aims that was his most striking characteristic; but there are hundreds of them who would have carried out his plans with just as little consideration for others if they could have formed the plans. "I used to think that his strain of Indian blood, remote as it was, might have something to do with the cunning and pitilessness of the man. Strangely enough, the existence of that strain was unknown to anyone but himself and me. It was when he asked me to apply my taste for genealogical work to his own obscure family history that I made the discovery that he had in him a share of the blood of the Iroquois chief Montour and his French wife, a terrible woman who ruled the savage politics of the tribes of the Wilderness two hundred years ago. The Mandersons were active in the fur trade on the Pennsylvania border in those days, and more than one of them married Indian women. Other Indian blood than Montour's may have descended to Manderson, for all I can say, through previous and subsequent unions; some of the wives' antecedents were quite untraceable, and there were so many generations of pioneering before the whole country was brought under civilization. Manderson was thunderstruck at what I told him, and was anxious to conceal it from every soul. Of course I never gave it away while he lived, and I don't think he supposed I would; but I have thought since that his mind took a turn against me from that time onward. It happened about a year before his death." "Had Manderson," asked Mr. Cupples, so unexpectedly that the other started, "any definable religious attitude?"