another, as indicated by the deepening of the foot imprint upon the side of the load, and the changing of the knuckle imprints from one side of the trail to the other.
There were stretches along the surface paths where the ape had gone for considerable distances entirely erect upon his hind feet—walking as a man walks; but the same might have been true of any of the great anthropoids of the same species, for, unlike the chimpanzee and the gorilla, they walk without the aid of their hands quite as readily as with. It was such things, however, which helped to identify to Tarzan and to Taug the appearance of the abductor, and with his individual scent characteristic already indelibly impressed upon their memories, they were in a far better position to know him when they came upon him, even should he have disposed of Teeka before, than is a modern sleuth with his photographs and Bertillon measurements, equipped to recognize a fugitive from civilized justice.
But with all their high-strung and delicately attuned perceptive faculties the two bulls of the tribe of Kerchak were often sore pressed to follow the trail at all, and at best were so delayed that in the afternoon of the second day, they still had not overhauled the fugitive. The scent was now strong, for it had been made since the rain, and Tarzan knew that it would not be long before they came upon the thief and his loot. Above them, as they crept stealth-
