He gave forth the long, melancholy hoot of the owl, and he did it so well that he was surprised at his own skill. The note, full of desolation and menace, seemed to come back in many echoes. He saw the swart leader and the men with him start and look fearfully toward the forest that curved so near. Then he saw them talking together and gazing at the point from which the sound had come. Perhaps they were trying to persuade themselves the note was only fancy.
Robert laughed softly to himself. He was pleased, immensely pleased with his experiment. His fantastic mood grew. He was a spirit of the woods himself; one of those old fauns of the Greeks, and he was really there to punish the evil invaders of his island. His body seemed to grow light with his spirit and he slid away among the trees with astonishing ease, as sure of foot and as noiseless as Tayoga himself. Then the owl gave forth his long, lonely cry with increased volume and fervor. It was a note filled with complaint and mourning, and it told of the desolation that overspread a desolate world.
Robert knew now that the leader and his men were disturbed. He could tell it by the anxious way in which they watched the woods, and, gliding farther around the circle, he sent forth the cry a third time. He was quite sure that he had made a further increase in its desolation and menace, and he saw the swart leader and his men draw together as if they were afraid.
The owl was not the only trick in Robert's trade. His ambition took a wide sweep and fancy was fertile. He had aroused in these men the fear of the supernatural, a dread that the ghosts of those whom they had murdered had come back to haunt or punish them. He had been an apt pupil of Tayoga before the slaver came to Albany, and now he meant to show the ruffians that the owl was not the only spirit of fate hovering over them.
The deep growl of a bear came from the thicket, not the growl of an ordinary black bear, comedian of the forest, but the angry rumble of some great ursine beast of which the black bear was only a dwarf cousin. Then he moved swiftly to another point and repeated it.
He heard the leader cursing and trying to calm the fears of the men while it was evident that his own too were aroused. The fellow suddenly drew a pistol and fired a bullet into the forest. Robert heard it cutting the leaves near him. But he merely lay down and laughed. His fantastic impulse was succeeding in more brilliant fashion than he had hoped.
Imitating their leader, six or eight of the men snatched out pistols and fired at random into the woods. The cry of a panther, drawn out, long, full of ferocity and woe, plaintive on its last note, like the haunting lament of a woman, was their answer. He heard a gasp of fear from the men, but the leader, of stauncher stuff, cowed them with his curses.
Robert moved back on his course, and then gave forth the shrill, fierce yelp of the hungry wolf, dying into an angry snarl. It was, perhaps, a more menacing note than that of the larger animals, and he plainly saw the ruffians shiver. He was creating in them the state of mind that he wanted, and his spirits flamed yet higher. All things seemed possible to him in his present mood.
He moved once more and then lay flat in the dense bushes. He fancied that the pirates would presently fire another volley into the shadows, and, in a moment of desperate courage, might even come into the forest. His first thought was correct, as the leader told off the steadier men, and, walking up and down in front of the forest, they raked it for a considerable distance with pistol shots. All of them, of course, passed well over Robert's head, and as soon as they finished he went back to his beginnings, giving forth the owl's lament.
He heard the leader curse more fiercely than ever before, and he saw several of the men who had been pulling trigger retreat to the fire. It was evident to him that the terror of the thing was entering their souls. The night itself, as if admiring his plan, was lending him the greatest possible aid. The crimson lightning never ceased to quiver and the sullen rumble of the distant thunder was increasing. It was easy enough for men, a natural prey to superstition, and, with the memories of many crimes, to believe that the island was haunted, that the ghosts of those they had slain were riding the lightning, and that demons, taking the forms of animals, were waiting for them in the bushes.