"Come! Come!" snapped Bradley. "Won't do. Won't do at all. Get to work, all of you. Waste of time. Can't waste time." His authoritative tones brought them all up standing, and presently each was occupied with his own duties; but each worked in silence and there was no singing and no bantering such as had marked the making of previous camps. Not until they had eaten and to each had been issued the little ration of smoking tobacco allowed after each evening meal did any sign of a relaxation of taut nerves appear. It was Brady who showed the first signs of returning good spirits. He commenced humming "It's a Long Way to Tipperary" and presently to voice the words, but he was well into his third song before anyone joined him, and even then there seemed a dismal note in even the gayest of tunes. A huge fire blazed in the opening of their rocky shelter that the prowling carnivora might be kept at bay; and always one man stood on guard, watchfully alert against a sudden rush by some maddened beast of the jungle. Beyond the fire, yellow-green spots of flame appeared, moved restlessly about, disappeared and reappeared, accompanied by a hideous chorus of screams and growls and roars as the hungry meat-eaters hunting through the night were attracted by the light or the scent of possible prey. But to such sights and sounds as these the five men had become callous. They sang or talked as unconcernedly as they might have done in the bar-room of some publichouse at home. Sinclair was standing guard. The others were listening to Brady's description of traffic congestion at the Rush Street bridge during the rush hour at night. The fire crackled cheerily. The owners of the yellow-green eyes raised their frightful chorus to the heavens. Conditions seemed again to have returned to normal. And then, as though the hand of Death had reached out and touched them all, the five men tensed into sudden rigidity. Above the nocturnal diapason of the teeming jungle sounded a dismal flapping of wings and over head, through the thick night, a shadowy form passed across the diffused light of the flaring camp-fire. Sinclair raised his rifle and fired. An eerie wail floated down from above and the apparition, whatever it might have been, was swallowed by the darkness. For several seconds the listening men heard the sound of those dismally flapping wings lessening in the distance until they could no longer be heard. Bradley was the first to speak. "Shouldn't have fired, Sinclair," he said; "can't waste ammunition." But there was no note of censure in his tone. It was as though he understood the nervous reaction that had compelled the other's act. "I couldn't help it, sir," said Sinclair. "Lord, it would take an iron man to keep from shootin' at that awful thing. Do you believe in ghosts, sir?" "No," replied Bradley. "No such things."