The distance between the two horses began slowly to lessen, and Warburton understood, in a nebulous way, what the girl had meant when she said that Dick could outrun Pirate. If Pirate kept to the road, Dick would bring him down; but if Pirate took it into his head to vault a fence! Warburton shuddered. Faster, faster, over this roll of earth, clattering across this bridge, around this curve and that angle. Once the sight of a team drawing a huge grain-wagon sent a shiver to Warburton's heart. But they thundered past with a foot to spare. The old negro on the seat stared after them, his ebony face drawn with wonder and the whites of his eyes showing.