Green had carefully timed his arrival to give him a few minutes of daylight to arrange his apparatus, which consisted of a small storage battery and a powerful automobile spotlight. He drove a stick into the ground and attached the spotlight to it. The light was so arranged that it could not be seen by anyone passing on the roadway before dark. At the same time the light had a clear space through which to throw its beam directly on the tree when the current was switched on. Green connected the storage battery to the spotlight and tried the switch a couple of times to make sure that it was in working order. Then he sat down beside his apparatus, leaned his back against a tree, and prepared to await developments. After darkness fell he found his vigil somewhat tiresome. He dared not smoke, nor strike a light of any kind, so it was impossible to even take note of the time. Under such circumstances time seems to stretch to an interminable length and the nerves get on edge. Green at length felt these effects from the waiting game he had started to play. During his many years on the police force, and since beginning his career as a private detective, his work had been confined to well-lighted city streets. Lately, much of his time had been spent in brilliantly lighted resorts, keeping an appraising eye on the after-business-hours amusements of trusted employees. To step from these places to the thick woods on a dark, still night was something of a change, and as time passed Green was willing to admit it. He had never before believed that such absolute quiet could be possible. All Nature slept. No chirp of bird voices, or hum of insects, could be heard. There was no sound save the occasional rustling of leaves overhead, the distant and weird call of locomotives on the railroad, and once in a great while the snapping of a twig in the underbrush, or the sound of something dropping through the trees. These were just the ordinary sounds of the woods at night, but to Green’s inexperienced ears they might mean anything, and many times one hand shot out to the switch on his lighting apparatus while the other grasped the automatic in his pocket. But each sound had stood by itself, and Green’s nervous alertness relaxed as time wore on. Suddenly Green’s ears caught the sound of a stone overturned on the roadway. This was more like the sounds he had been expecting and his body stiffened to attention. A moment later he heard the sound again, a little nearer, and then a third time it came from the road directly opposite to him. To Green it could mean nothing but the cautious footsteps of someone approaching the tree. He continued to listen intently. Sure enough, there was a slight scratching sound in the direction of the tree. This was Green’s long awaited opportunity. Abruptly he threw the switch and a broad beam of light made the great trunk of the oak stand out against the black background of the woods.