like hunting for a needle in a haystack. Do you believe, Nkima, that in this great mountain range we shall find our needle?'
'Let us go home,' said Nkima, 'where it is warm. Here the wind blows and up there it is colder. It is no place for little Manu, the monkey.'
'Nevertheless, Nkima, there is where we are going.'
The monkey looked up toward the frowning heights above. 'Little Nkima is afraid,' he said. 'It is in such places that Sheeta, the panther, lairs.'
Ascending diagonally and in a westerly direction in the hope of crossing von Harben's trail, Tarzan moved constantly in the opposite direction from that taken by the man he sought. It was his intention, however, when he reached the summit, if he had in the meantime found no trace of von Harben, to turn directly eastward and search at a higher altitude in the opposite direction. As he proceeded, the slope became steeper and more rugged until at one point near the western end of the mountain mass he encountered an almost perpendicular barrier high up on the mountainside along the base of which he picked his precarious way among loose boulders that had fallen from above. Underbrush and stunted trees extended at different points from the forest below quite up to the base of the vertical escarpment.
So engrossed was the ape-man in the dangerous business of picking his way along the mountainside that he gave little heed to anything beyond the necessities of the trail and his constant search for the spoor of von Harben, and so he did not see the little group of warriors that were gazing up at him from the shelter of a clump of trees far down the slope, nor did Nkima, usually as alert as his master, have eyes or ears for anything beyond the immediate exigencies of the trail. Nkima was unhappy. The wind blew and Nkima did not like the wind. All about him he smelled the spoor of Sheeta, the panther, while he considered the paucity and stunted nature of the few trees along the way that his master had chosen. From time to time he noted, with sinking heart, ledges just above them from which Sheeta might spring down upon them; and the way was a way of terror for little Nkima.
Now they had come to a particularly precarious point upon the mountainside. A sheer cliff rose above them on their right and at their left the mountainside fell away so steeply that as Tarzan advanced his body was pressed closely against the granite face of the cliff as he sought a foothold upon the ledge of loose rubble. Just ahead of them the cliff shouldered out boldly against the distant skies. Perhaps beyond that clear-cut corner the going might be better. If it should develop that it was worse, Tarzan realized that he must turn back.
At the turn where the footing was narrowest a stone gave beneath Tarzan's foot, throwing him off his balance for an instant and at that same instant Nkima, thinking that Tarzan was falling, shrieked and leaped from his shoulder, giving the ape-man's body just the impetus that was required to overbalance it entirely.
The mountainside below was steep, though not perpendicular, and if Nkima had not pushed the ape-man outward he doubtless would have slid but a short distance before being able to stay his fall, but as it was he lunged headforemost down the embankment, rolling and tumbling for a short distance over the loose rock until his body was brought to a stop by one of the many stunted trees that clung tenaciously to the wind-swept slope.
Terrified, Nkima scampered to his master's side. He screamed and chattered in his ear and pulled and tugged upon him in an effort to raise him, but the ape-man lay motionless, a tiny stream of blood trickling from a cut on his temple into his shock of black hair.
As Nkima mourned, the warriors, who had been watching them from below, clambered quickly up the mountainside toward him and his helpless master.
Chapter Four
As Erich von Harben turned to face the thing that he had heard approaching behind him, he saw a Negro armed with a rifle coming toward him.
'Gabula!' exclaimed the white man, lowering his weapon. 'What are you doing here?'
'Bwana,' said the warrior, 'I could not desert you. I could not leave you to die alone at the hands of the spirits that dwell upon these mountains.'
Von Harben eyed him incredulously. 'But if you believe that, Gabula, are you not afraid that they will kill you, too?'
'I expect to die, Bwana,' replied Gabula. 'I cannot understand why you were not killed the first night or the second night. We shall both surely be killed tonight.'
'And yet you followed me! Why?'
'You have been kind to me, Bwana,' replied the man. 'Your father has been kind to me. When the others talked they filled me with fear and when they ran away I went with them, but I have come back. There was nothing else that I could do, was there?'
'No, Gabula. For you or for me there would have been nothing else to do, as we see such things, but as the others saw them they found another thing to do and they did it.'
'Gabula is not as the others,' said the man, proudly. 'Gabula is a Batoro.'
'Gabula is a brave warrior,' said von Harben. 'I do not believe in spirits and so there was no reason why I should be afraid, but you and all your people do believe in them and so it was a very brave thing for you to come back, but I shall not hold you. You may return, Gabula, with the others.'
'Yes?' Gabula exclaimed eagerly. 'The Bwana is going back? That will be good. Gabula will go back with him.'
'No, I am going down into that canyon,' said von Harben, pointing over the rim.
Gabula looked down, surprise and wonder reflected by his wide eyes and parted lips.
'But, Bwana, even if a human being could find a way down these steep cliffs, where there is no place for either hand or foot, he would surely be killed the moment he reached the bottom, for this indeed must be the Land of The Lost Tribe where the spirits of the dead live in the heart of the Wiramwazi.'
'You do not need to come with me, Gabula,' said von Harben. 'Go back to your people.'
'How are you going to get down there?' demanded the Negro.
'I do not know just how, or where, or when. Now I am going to descend as far along this fissure as I can go. Perhaps I shall find my way down here, perhaps not.'
'But suppose there is no foothold beyond the fissure?' asked Gabula.
'I shall have to find footing.'
Gabula shook his head. 'And if you reach the bottom, Bwana, and you are right about the spirits and there are none or they do not kill you, how will you get out again?'
Von Harben shrugged his shoulders and smiled. Then he extended his hand. 'Goodby, Gabula,' he said. 'You are a brave man.'
Gabula did not take the offered hand of his master. 'I am going with you,' he said, simply.
'Even though you realize that should we reach the bottom alive we may never be able to return?'
'Yes.'
'I cannot understand you, Gabula. You are afraid and I know that you wish to return to the village of your people. Then why do you insist on coming with me when I give you leave to return home?'
'I have sworn to serve you, Bwana, and I am a Batoro,' replied Gabula.
'And I can only thank the Lord that you are a Batoro,' said von Harben, 'for the Lord knows that I shall need help before I reach the bottom of this canyon, and we must reach it, Gabula, unless we are content to die by starvation.'
'I have brought food,' said Gabula. 'I knew that you might be hungry and I brought some of the food that you like,' and, unrolling the small pack that he carried, he displayed several bars of chocolate and a few packages of concentrated food that von Harben had included among his supplies in the event of an emergency.
To the famished von Harben, the food was like manna to the Israelites, and he lost no time in taking advantage of Gabula's thoughtfulness. The sharp edge of his hunger removed, von Harben experienced a feeling of renewed strength and hopefulness, and it was with a light heart and a buoyant optimism that he commenced the descent into the canyon.
Gabula's ancestry, stretching back through countless generations of jungle-dwelling people, left him appalled as he contemplated the frightful abyss into which his master was leading him, but so deeply had he involved himself
