The Horibs were moving almost directly up wind so that Tarzan knew that the authors of the familiar odors that he had sensed were somewhere ahead of them. He thought quickly now, but not without weighing carefully the plan that had leaped to his mind the instant that that familiar scent spoor had impinged upon his nostrils. His major consideration was for the safety of the girl, but in order to rescue her he must protect himself. He felt that it would be impossible for them both to escape simultaneously, but there was another way now--a way which seemed to offer excellent possibilities for success. Behind him, upon the Gorobor, and so close that their bodies touched, sat a huge Horib. In one hand he carried a lance, but the other hand was free. Tarzan must move so quickly that the fellow could not touch him with his free hand before he was out of reach. To do this would require agility of an almost superhuman nature, but there are few creatures who can compare in this respect with the ape-man. Low above them swung the branches of the dismal forest; Tarzan waited, watching for the opportunity he sought. Presently he saw it--a sturdy branch with ample head room above it--a doorway in the ceiling of somber foliage. He leaned forward, his hands resting lightly upon the neck of the Gorobor. They were almost beneath the branch he had selected when he sprang lightly to his feet and almost in the same movement sprang upward into the tree. So quickly had he accomplished the feat that he was gone before the Horib that had been guarding him realized it. When he did it was too late--the prisoner had gone. With others, who had seen the escape, he raised a cry of warning to those ahead, but neither by sight nor sound could they locate the fugitive, for Tarzan travelled through the upper terrace and all the foliage beneath hid him from the eyes of his enemies. Jana, who had been riding a little in the rear of Tarzan, saw his escape and her heart sank for in the presence of the Horibs The Red Flower of Zoram had come as near to experiencing fear as she ever had in her life. She had derived a certain sense of comfort from the presence of Tarzan and now that he was gone she felt very much alone. She did not blame him for escaping when he had the opportunity, but she was sure in her own heart that Jason would not thus have deserted her.