with the exception of a few of Usanga's renegade German native troops who wear German army shoes. I don't know that you can notice it, but it is evident to me that the foot inside the sandal that made these imprints were not the foot of a Negro. If you will examine them carefully you will notice that the impression of the heel and ball of the foot are well marked even through the sole of the sandal. The weight comes more nearly in the center of a Negro's footprint."
"Then you think these were made by a white person?"
"It looks that way," replied Tarzan, and suddenly, to the surprise of both the girl and Smith-Oldwick, he dropped to his hands and knees and sniffed at the tracks—again a beast utilizing the senses and woodcraft of a beast. Over an area of several square yards his keen nostrils sought the identity of the makers of the tracks. At length he rose to his feet.
"It is not the spoor of the Gomangani," he said, "nor is it exactly like that of white men. There were three who came this way. They were men, but of what race I do not know."
There was no apparent change in the nature of the gorge except that it had steadily grown deeper as they followed it downward until now the rocky and precipitous sides rose far above them. At different points natural caves, which appeared to have been eroded by the action of water in some forgotten age, pitted the side walls at various heights. Near them was such a cavity at the ground's level—an arched cavern floored with white sand. Tarzan indicated it with a gesture of his hand.
"We will lair here tonight," he said, and then with one of his rare, slow smiles: "We will CAMP here tonight."
Having eaten their meager supper Tarzan bade the girl enter the cavern.
"You will sleep inside," he said. "The lieutenant and I will lie outside at the entrance."
Chapter XVI
The Night Attack
As the girl turned to bid them good night, she thought that she saw a shadowy form moving in the darkness beyond them, and almost simultaneously she was sure that she heard the sounds of stealthy movement in the same direction.
"What is that?" she whispered. "There is something out there in the darkness."
"Yes," replied Tarzan, "it is a lion. It has been there for some time. Hadn't you noticed it before?"
"Oh!" cried the girl, breathing a sigh of relief, "is it our lion?"
"No," said Tarzan, "it is not our lion; it is another lion and he is hunting."
"He is stalking us?" asked the girl.
"He is," replied the ape-man. Smith-Oldwick fingered the grip of his pistol.
Tarzan saw the involuntary movement and shook his head.
"Leave that thing where it is, Lieutenant," he said.
The officer laughed nervously. "I couldn't help it, you know, old man," he said; "instinct of self-preservation and all that."
"It would prove an instinct of self-destruction," said Tarzan. "There are at least three hunting lions out there watching us. If we had a fire or the moon were up you would see their eyes plainly. Presently they may come after us but the chances are that they will not. If you are very anxious that they should, fire your pistol and hit one of them."
"What if they do charge?" asked the girl; "there is no means of escape."
"Why, we should have to fight them," replied Tarzan.
"What chance would we three have against them?" asked the girl.
The ape-man shrugged his shoulders. "One must die sometime," he said. "To you doubtless it may seem terrible—such a death; but Tarzan of the Apes has always expected to go out in some such way. Few of us die of old age in the jungle, nor should I care to die thus. Some day Numa will get me, or Sheeta, or a black warrior. These or some of the others. What difference does it make which it is, or whether it comes tonight or next year or in ten years? After it is over it will be all the same."
The girl shuddered. "Yes," she said in a dull, hopeless voice, "after it is over it will be all the same."
Then she went into the cavern and lay down upon the sand. Smith-Oldwick sat in the entrance and leaned against the cliff. Tarzan squatted on the opposite side.
"May I smoke?" questioned the officer of Tarzan. "I have been hoarding a few cigarettes and if it won't attract those bouncers out there I would like to have one last smoke before I cash in. Will you join me?" and he proffered the ape-man a cigarette.
"No, thanks," said Tarzan, "but it will be all right if you smoke. No wild animal is particularly fond of the fumes of tobacco so it certainly won't entice them any closer."
Smith-Oldwick lighted his cigarette and sat puffing slowly upon it. He had proffered one to the girl but she had refused, and thus they sat in silence for some time, the silence of the night ruffled occasionally by the faint crunching of padded feet upon the soft sands of the gorge's floor.
It was Smith-Oldwick who broke the silence. "Aren't they unusually quiet for lions?" he asked.
"No," replied the ape-man; "the lion that goes roaring around the jungle does not do it to attract prey. They are very quiet when they are stalking their quarry."
"I wish they would roar," said the officer. "I wish they would do anything, even charge. Just knowing that they are there and occasionally seeing something like a shadow in the darkness and the faint sounds that come to us from them are getting on my nerves. But I hope," he said, "that all three don't charge at once."
"Three?" said Tarzan. "There are seven of them out there now."
"Good Lord! exclaimed Smith-Oldwick.
"Couldn't we build a fire," asked the girl, "and frighten them away?"
"I don't know that it would do any good," said Tarzan, "as I have an idea that these lions are a little different from any that we are familiar with and possibly for the same reason which at first puzzled me a little—I refer to the apparent docility in the presence of a man of the lion who was with us today. A man is out there now with those lions."
"It is impossible!" exclaimed Smith-Oldwick. "They would tear him to pieces."
"What makes you think there is a man there?" asked the girl.
Tarzan smiled and shook his head. "I am afraid you would not understand," he replied. "It is difficult for us to understand anything that is beyond our own powers."
"What do you mean by that?" asked the officer.
"Well," said Tarzan, "if you had been born without eyes you could not understand sense impressions that the eyes of others transmit to their brains, and as you have both been born without any sense of smell I am afraid you cannot understand how I can know that there is a man there."
"You mean that you scent a man?" asked the girl.
Tarzan nodded affirmatively.
"And in the same way you know the number of lions?" asked the man.
"Yes," said Tarzan. "No two lions look alike, no two have the same scent."
The young Englishman shook his head. "No," he said, "I cannot understand."
"I doubt if the lions or the man are here necessarily for the purpose of harming us," said Tarzan, "because there has been nothing to prevent their doing so long before had they wished to. I have a theory, but it is utterly preposterous."
"What is it?" asked the girl.
"I think they are here," replied Tarzan, "to prevent us from going some place that they do not wish us to go; in other words we are under surveillance, and possibly as long as we don't go where we are not wanted we shall not be bothered."
"But how are we to know where they don't want us to go?" asked Smith-Oldwick.
"We can't know," replied Tarzan, "and the chances are that the very place we are seeking is the place they don't wish us to trespass on."
"You mean the water?" asked the girl.
"Yes," replied Tarzan.
For