The bird was dead when they reached it. They removed the arrow carefully and then went to look for the first one that had been shot and gone astray, for they had only a limited number and the time might come when every one of them counted. David thought the task of looking for the slender shaft in the thick jungle was hopeless, but Miguel assured him that he had marked its course as it soared over the trees. “You see,” he added, “each one has a few bright-colored feathers on the end in addition to the black ones that make it fly straight.” “Yes, I see them. You put them there for ornaments, I know.” “No, they are not ornaments. They are put there as markers. Look! There is the lost one now.” David saw what looked like a brilliant flower among the deep tints of the undergrowth. It was the arrow sticking in the ground where it had fallen; the red feather made it conspicuous among the green vegetation. They recovered it and replaced it in the pack. A short time later they were startled by a chorus of “Oh’s” that came from the treetops not far ahead. The wails came in a rising crescendo, as if their makers were suffering intense pain or were in great fear. “Flying monkeys,” Miguel announced gleefully as he started on a run toward the sound. David followed and soon saw the cause of the disturbance in the form of small, grayish bodies hurtling through space is if indeed flying. The monkeys were leaping from tree to tree and swinging through the branches at an incredible rate of speed. When they jumped, the boughs sprang back into place with a _swish_ and the creatures landed with a thud, keeping the treetops bending and swaying as in a heavy wind. All the while they shrieked “Oh, oh, oh!” at the top of their voices. Miguel sent an arrow after the fleeing animals and by a lucky circumstance brought down one of them. It was unlike any monkey David had ever seen, with a round head and a body like a very large cat’s. The tail was long and bushy. They returned to the shelter and while the meat was roasting determined to start away early the following morning. They agreed that the rubber camp must be in a southeasterly direction from their position and they would therefore head that way, which was also the direction in which they hoped to find the river. It was true, the jungle was heaviest and progress would be slower; but, also, game was more abundant, and if they discovered the waterway it would save them days of walking in the end. If their calculations were correct the stream might even turn out to be a branch of the river on which the camp was situated. The forest changed considerably in character as they advanced through it. Palms grew more abundantly than before and occasionally they saw a clump of orchids perched high overhead with sprays of gorgeous blossoms that drooped from among the leathery foliage like yard-long, brilliant plumes.