When the sun shone again upon the second day and a wide, open plain let the full heat of Kudu flood the chilled, brown body, Tarzan's spirits rose; but it was still a sullen, surly brute that moved steadily onward into the south where he hoped again to pick up the trail of the Germans. He was now in German East Africa and it was his intention to skirt the mountains west of Kilimanjaro, whose rugged peaks he was quite willing to give a wide berth, and then swing eastward along the south side of the range to the railway that led to Tanga, for his experience among men suggested that it was toward this railroad that German troops would be likely to converge.
Two days later, from the southern slopes of Kilimanjaro, he heard the boom of cannon far away to the east. The afternoon had been dull and cloudy and now as he was passing through a narrow gorge a few great drops of rain began to splatter upon his naked shoulders. Tarzan shook his head and growled his disapproval; then he cast his eyes about for shelter, for he had had quite enough of the cold and drenching. He wanted to hasten on in the direction of the booming noise, for he knew that there would be Germans fighting against the English. For an instant his bosom swelled with pride at the thought that he was English and then he shook his head again viciously. 'No!' he muttered, 'Tarzan of the Apes is not English, for the English are men and Tarzan is Tarmangani;' but he could not hide even from his sorrow or from his sullen hatred of mankind in general that his heart warmed at the thought it was Englishmen who fought the Germans. His regret was that the English were human and not great white apes as he again considered himself.
'Tomorrow,' he thought, 'I will travel that way and find the Germans,' and then he set himself to the immediate task of discovering some shelter from the storm. Presently he espied the low and narrow entrance to what appeared to be a cave at the base of the cliffs which formed the northern side of the gorge. With drawn knife he approached the spot warily, for he knew that if it were a cave it was doubtless the lair of some other beast. Before the entrance lay many large fragments of rock of different sizes, similar to others scattered along the entire base of the cliff, and it was in Tarzan's mind that if he found the cave unoccupied he would barricade the door and insure himself a quiet and peaceful night's repose within the sheltered interior. Let the storm rage without-Tarzan would remain within until it ceased, comfortable and dry. A tiny rivulet of cold water trickled outward from the opening.
Close to the cave Tarzan kneeled and sniffed the ground. A low growl escaped him and his upper lip curved to expose his fighting fangs. 'Numa!' he muttered; but he did not stop. Numa might not be at home—he would investigate. The entrance was so low that the ape-man was compelled to drop to all fours before he could poke his head within the aperture; but first he looked, listened, and sniffed in each direction at his rear—he would not be taken by surprise from that quarter.
His first glance within the cave revealed a narrow tunnel with daylight at its farther end. The interior of the tunnel was not so dark but that the ape-man could readily see that it was untenanted at present. Advancing cautiously he crawled toward the opposite end imbued with a full realization of what it would mean if Numa should suddenly enter the tunnel in front of him; but Numa did not appear and the ape-man emerged at length into the open and stood erect, finding himself in a rocky cleft whose precipitous walls rose almost sheer on every hand, the tunnel from the gorge passing through the cliff and forming a passageway from the outer world into a large pocket or gulch entirely enclosed by steep walls of rock. Except for the small passageway from the gorge, there was no other entrance to the gulch which was some hundred feet in length and about fifty in width and appeared to have been worn from the rocky cliff by the falling of water during long ages. A tiny stream from Kilimanjaro's eternal snow cap still trickled over the edge of the rocky wall at the upper end of the gulch, forming a little pool at the bottom of the cliff from which a small rivulet wound downward to the tunnel through which it passed to the gorge beyond. A single great tree flourished near the center of the gulch, while tufts of wiry grass were scattered here and there among the rocks of the gravelly floor.
The bones of many large animals lay about and among them were several human skulls. Tarzan raised his eyebrows. 'A man-eater,' he murmured, 'and from appearances he has held sway here for a long time. Tonight Tarzan will take the lair of the man-eater and Numa may roar and grumble upon the outside.'
The ape-man had advanced well into the gulch as he investigated his surroundings and now as he stood near the tree, satisfied that the tunnel would prove a dry and quiet retreat for the night, he turned to retrace his way to the outer end of the entrance that he might block it with boulders against Numa's return, but even with the thought there came something to his sensitive ears that froze him into statuesque immobility with eyes glued upon the tunnel's mouth. A moment later the head of a huge lion framed in a great black mane appeared in the opening. The yellow-green eyes glared, round and unblinking, straight at the trespassing Tarmangani, a low growl rumbled from the deep chest, and lips curled back to expose the mighty fangs.
'Brother of Dango!' shouted Tarzan, angered that Numa's return should have been so timed as to frustrate his plans for a comfortable night's repose. 'I am Tarzan of the Apes, Lord of the Jungle. Tonight I lair here— go!'
But Numa did not go. Instead he rumbled forth a menacing roar and took a few steps in Tarzan's direction. The ape-man picked up a rock and hurled it at the snarling face. One can never be sure of a lion. This one might turn tail and run at the first intimation of attack—Tarzan had bluffed many in his time—but not now. The missile struck Numa full upon the snout—a tender part of a cat's anatomy—and instead of causing him to flee it transformed him into an infuriated engine of wrath and destruction.
Up went his tail, stiff and erect, and with a series of frightful roars he bore down upon the Tarmangani at the speed of an express train. Not an instant too soon did Tarzan reach the tree and swing himself into its branches and there he squatted, hurling insults at the king of beasts while Numa paced a circle beneath him, growling and roaring in rage.
It was raining now in earnest adding to the ape-man's discomfort and disappointment. He was very angry; but as only direct necessity had ever led him to close in mortal combat with a lion, knowing as he did that he had only luck and agility to pit against the frightful odds of muscle, weight, fangs, and talons, he did not now even consider descending and engaging in so unequal and useless a duel for the mere reward of a little added creature comfort. And so he sat perched in the tree while the rain fell steadily and the lion padded round and round beneath, casting a baleful eye upward after every few steps.
Tarzan scanned the precipitous walls for an avenue of escape. They would have baffled an ordinary man; but the ape-man, accustomed to climbing, saw several places where he might gain a foothold, precarious possibly; but enough to give him reasonable assurance of escape if Numa would but betake himself to the far end of the gulch for a moment. Numa, however, notwithstanding the rain, gave no evidence of quitting his post so that at last Tarzan really began to consider seriously if it might not be as well to take the chance of a battle with him rather than remain longer cold and wet and humiliated in the tree.
But even as he turned the matter over in his mind Numa turned suddenly and walked majestically toward the tunnel without even a backward glance. The instant that he disappeared, Tarzan dropped lightly to the ground upon the far side of the tree and was away at top speed for the cliff. The lion had no sooner entered the tunnel than he backed immediately out again and, pivoting like a flash, was off across the gulch in full charge after the flying ape- man; but Tarzan's lead was too great—if he could find finger or foothold upon the sheer wall he would be safe; but should he slip from the wet rocks his doom was already sealed as he would fall directly into Numa's clutches where even the Great Tarmangani would be helpless.
With the agility of a cat Tarzan ran up the cliff for thirty feet before he paused, and there finding a secure foothold, he stopped and looked down upon Numa who was leaping upward in a wild and futile attempt to scale the rocky wall to his prey. Fifteen or twenty feet from the ground the lion would scramble only to fall backward again defeated. Tarzan eyed him for a moment and then commenced a slow and cautious ascent toward the summit. Several times he had difficulty in finding holds but at last he drew himself over the edge, rose, picked up a bit of loose rock, hurled it at Numa and strode away.
Finding an easy descent to the gorge, he was about to pursue his journey in the direction of the still-booming guns when a sudden thought caused him to halt and a half-smile to play about his lips. Turning, he trotted quickly back to the outer opening of Numa's tunnel. Close beside it he listened for a moment and then rapidly began to gather large rocks and pile them within the entrance. He had almost closed the aperture when the lion appeared upon the inside—a very ferocious and angry lion that pawed and clawed at the rocks and uttered mighty roars that caused the earth to tremble; but roars did not frighten Tarzan of the Apes. At Kala's shaggy breast he had closed his infant eyes in sleep upon countless nights in years gone by to the savage chorus of similar roars. Scarcely a day or night of his jungle life—and practically all his life had been spent in the jungle—had he not heard the roaring of hungry lions, or angry lions, or love-sick lions. Such sounds affected Tarzan as the tooting of an automobile horn
