No other bull of the tribe of Kerchak was so good a trailer as Tarzan, for his trained senses were aided by a high order of intelligence. His judgment told him the natural trail for a quarry to follow, so that he need but note the most apparent marks upon the way, and today the trail of Toog was as plain to him as type upon a printed page to you or me.
Following close behind the lithe figure of the ape-man came the huge and shaggy bull ape. No words passed between them.
They moved as silently as two shadows among the myriad shadows of the forest. Alert as his eyes and ears, was Tarzan's patrician nose. The spoor was fresh, and now that they had passed from the range of the strong ape odor of the tribe he had little difficulty in following Toog and Teeka by scent alone. Teeka's familiar scent spoor told both Tarzan and Taug that they were upon her trail, and soon the scent of Toog became as familiar as the other.
They were progressing rapidly when suddenly dense clouds overcast the sun. Tarzan accelerated his pace.
Now he fairly flew along the jungle trail, or, where Toog had taken to the trees, followed nimbly as a squirrel along the bending, undulating pathway of the foliage branches, swinging from tree to tree as Toog had swung before them;but more rapidly because they were not handicapped by a burden such as Toog's.
Tarzan felt that they must be almost upon the quarry, for the scent spoor was becoming stronger and stronger, when the jungle was suddenly shot by livid lightning, and a deafening roar of thunder reverberated through the heavens and the forest until the earth trembled and shook.
Then came the rain--not as it comes to us of the temperate zones, but as a mighty avalanche of water--a deluge which spills tons instead of drops upon the bending forest giants and the terrified creatures which haunt their shade.
And the rain did what Tarzan knew that it would do-- it wiped the spoor of the quarry from the face of the earth.
For a half hour the torrents fell--then the sun burst forth, jeweling the forest with a million scintillant gems;but today the ape-man, usually alert to the changing wonders of the jungle, saw them not. Only the fact that the spoor of Teeka and her abductor was obliterated found lodgment in his thoughts.
Even among the branches of the trees there are well-worn trails, just as there are trails upon the surface of the ground;but in the trees they branch and cross more often, since the way is more open than among the dense undergrowth at the surface. Along one of these well-marked trails Tarzan and Taug continued after the rain had ceased, because the ape-man knew that this was the most logical path for the thief to follow; but when they came to a fork, they were at a loss. Here they halted, while Tarzan examined every branch and leaf which might have been touched by the fleeing ape.
He sniffed the bole of the tree, and with his keen eyes he sought to find upon the bark some sign of the way the quarry had taken. It was slow work and all the time, Tarzan knew, the bull of the alien tribe was forging steadily away from them--gaining precious minutes that might carry him to safety before they could catch up with him.
First along one fork he went, and then another, applying every test that his wonderful junglecraft was cognizant of;but again and again he was baffled, for the scent had been washed away by the heavy downpour, in every exposed place.
For a half hour Tarzan and Taug searched, until at last, upon the bottom of a broad leaf, Tarzan's keen nose caught the faint trace of the scent spoor of Toog, where the leaf had brushed a hairy shoulder as the great ape passed through the foliage.
Once again the two took up the trail, but it was slow work now and there were many discouraging delays when the spoor seemed lost beyond recovery. To you or me there would have been no spoor, even before the coming of the rain, except, possibly, where Toog had come to earth and followed a game trail. In such places the imprint of a huge handlike foot and the knuckles of one great hand were sometimes plain enough for an ordinary mortal to read. Tarzan knew from these and other indications that the ape was yet carrying Teeka.
The depth of the imprint of his feet indicated a much greater weight than that of any of the larger bulls, for they were made under the combined weight of Toog and Teeka, while the fact that the knuckles of but one hand touched the ground at any time showed that the other hand was occupied in some other business--the business of holding the prisoner to a hairy shoulder. Tarzan could follow, in sheltered places, the changing of the burden from one shoulder to 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.