Upon the second, Cassidy was through the hedge gap and hot-foot after him, with Green coming along only a pace or two behind. Over his shoulder Cassidy whooped a call for aid to the traffic policeman in the roadway. But that stout person, who had been exiled to these faraway precincts by reason of his increasing girth and a tendency toward fallen arches, only took one or two steps upon his flat feet and then halted, being in doubt as to what it was all about. Before he could make up his mind whether or not to join the chase, it was too late to join it. The fugitive, travelling a straight course, had crossed the field at its narrowest point and had bounded into the fringe of greenery bordering the little lake, heading apparently for the thick swampy place lying between the ball ground and the golf links. The two pursuers, legging along behind, did their best to keep him in sight, but, one thing sure, they were not gaining on him. As a matter of truth, they were losing. Twice they lost him and twice they spied him again--once crossing a bit of open glade, once weaving in and out among the tree trunks farther on. Then they lost him altogether. Cassidy had shown the better pair of legs at the start of the race, but now his wind began to fail. Panting and blowing fit to shame porpoises, he slackened his speed, falling back inch by inch, while the slighter and younger man took the lead. Green settled to a steady, space-eating jog-trot, all the time watching this way and that. There were singularly few people in sight--only a chronic golfer here and there up on the links--and these incurables merely stared through the rain-drops at him as he forced his way among the thickets below them. Cassidy, falling farther and farther behind, presently met a mounted policeman ambling his horse along a tree-shaded roadway that crossed the park from east to west, and between gulps for breath told what he knew. Leaning half out of his saddle, the mounted man listened, believed--and acted. Leaving Cassidy behind, he spurred his bay to a walloping gallop, aiming for the northern confines of the park, and as he travelled, he spread the alarm, gathering up for the man-chase such recruits as two park labourers and a park woodchopper and an automobile party of young men, so that presently there was quite a good-sized search party abroad in the woodland. As for Judson Green, he played his hand out alone. Dripping wet with rain and his own sweat, he emerged from a mile-long thicket upon an asphalted drive that wound interminably under the shouldering ledges of big gray rocks and among tall elms and oaks. Already he had lost his sense of direction, but he ran along the deserted road doggedly, pausing occasionally to peer among the tree trunks for a sight of his man. He thought, once, he heard a shot, but couldn't be sure, the sound seemed so muffled and so far away.