Lal Taask, running away, glanced back over his shoulder to see his dream of riches irremediably shattered, leaving nothing now in life for him but his hatred of Atan Thome and his desire for vengeance. Furious with hate and thwarted avarice, he ran back to Thorne to wreak his final revenge, barehanded, upon the screaming maniac. Lal Taask was choking and beating Atan Thome when Brian Gregory reached them and dragged the infuriated Indian from his victim. "What are you fools thinking of?" he demanded. "You're making enough noise to attract every warrior in Ashair. I ought to kill both of you; but right now we've got to forget all of that and work together to escape, for we'll never see that casket again."
Lal Taask knew that Gregory was right, but Atan Thome knew nothing. He could only think of The Father of Diamonds which he had lost, and impelled by a new maniacal impulse he suddenly broke away from Brian and ran screaming in the direction in which Ungo had disappeared with the casket. Lal Taask started after him, a curse upon his lips; but Brian layed a detaining hand on the man's arm.
"Let him go," he said; "he'll never get the casket from Ungo—he'll probably get himself killed instead. That accursed casket! So many have suffered and died because of it, and that poor fool has gone mad."
"Perhaps he is the most fortunate of all," said Lal Taask.
"I wish that I had never heard of it," continued Brian. "I have lost my father and sister, and probably all of their friends are dead because of my greed. A moment ago I would still have risked my life for it, but the sight of that jibbering idiot has brought me to my senses. I wouldn't have the thing now; I am not superstitious, but I believe there is a curse on it."
"Perhaps you are right," said Lal Taask. "I do not care so much about the casket as I did about killing that mad devil, but the gods have willed it otherwise. I shall have to be content."
Apelike, Ungo soon tired of his new bauble; and tossed the casket carelessly to the ground, his thoughts reverting to the matter of lizards and other dainty articles of food. He was about to lead his tribe in search of sustenance when they were attracted by loud screams. Instantly on guard, they stood watching the approach of the mad Thorne. Nervous, irritable beasts, it was a question whether they would run away or attack, as the man dashed among them and threw himself on the ground, clutching the casket to his breast. For a moment they stood there, apparently undecided, their little, red rimmed eyes blazing; then they moved slowly away, their menacing growls lost upon the poor maniac.
"It is mine! It is mine!" he shrieked. "I am rich! In all the world there is none so rich as I!"
The great apes lumbered down the hillside, their short tempers upset by the screaming and jabbering of Thorne, until Ungo was about to return and silence him forever. Just then he espied Brian and Lal Taask and transferred his anger from Thorne to them. They were tarmangani, and suddenly Ungo wanted to kill all tarmangani.
Attracted by the growls of the anthropoids, the two men looked up and saw the herd charging down the hill toward them. "Those beasts mean business," cried Brian. "It's time we got out of here."
"There's a cave," said Lal Taask, pointing toward the cliff. "If we can reach it ahead of them, we may be able to hide from them. There's just a chance that they may be afraid to go into a dark hole like that."
Running at top speed, the men reached the cave long before the apes could overtake them. The interior was not entirely dark, and they could see that the cave extended beyond the range of their vision.
"We'd better go as far as we can," said Brian. "We'll be in a devil of a fix if they do come in and follow us; but perhaps if they can't see us at first, they may give up the chase."
"It may be a cul-de-sac," admitted Lal Taask, "but it was the only chance we had; they'd have had us sure if we'd stayed in the open."
They followed a dark corridor that ended suddenly in a magnificent grotto, the splendor of which fairly took their breath away.
"Great Scott!" exclaimed Brian. "Did you ever see anything so gorgeous?"
"It's magnificent," agreed Taask; "but, right now, quite incidental—the apes are coming! I hear them growling."
"There's another cave in the other side of this cavern," said Brian. "Let's try that."
"There is nothing else to try," returned Lal Taask.
As the two men disappeared into the dark opening in the rear of the cavern, Ungo and his fellows streamed into the chamber they had just quitted, unimpressed by its magnificence; and still holding to the idea that dominated them for the moment—the chase. A bug, a beetle, or a bat might distract their attention and launch them upon a new adventure, for they could not hold long to a single objective; but there were none of these, and so they searched the grotto for their quarry. They circled the place, looking behind stalagmites, sniffing here and there, wasting much tune while the two men followed a new corridor deeper into the heart of the cliff.
Chapter 31
TARZAN, D'ARNOT, HERKUF, and Lavac hastened through the air chamber out onto the bottom of the lake to the spot where Helen had been left to await their return; but she was not there, though the casket lay undisturbed where Herkuf had hidden it. There was no clew to her whereabouts; and the men were at a loss as to the direction in which they should search. They dared not separate, and so they followed Tarzan as he wandered here and there about the garden of the ptomes looking for some trace of the missing girl. While they were thus engaged, the ape-man's attention was attracted fey the approach of several large marine animals the upper portions of which closely resembled the head and neck of a horse. There were six of them, and it was soon evident that they meant to attack. That they were extremely dangerous, Herkuf knew and the others soon realized, for they were as large as a man; and each was armed with a long, sharp horn which grew upward from the lower ends of their snouts.
Two of them attacked Tarzan, and one each the other three men, while the sixth circled about as though awaiting an opening through which it might take an antagonist unaware. Tarzan succeeded in dispatching one of those attacking him; and d'Arnot seemed to be experiencing no great difficulty with his. Lavac was hard pressed; but when he saw the sixth sea horse gliding up behind d'Arnot to impale him on its horn he turned to the rescue of his companion; as he did so, exposing himself to the attack of the sea horse with which he had been engaged.
It was an act of heroism on the part of the man who had wronged d'Arnot, an act that made full amends but cost a brave life, for the sea horse he had abandoned to come to d'Arnot's rescue plunged its powerful horn between his shoulders. Thus died Lieutenant Jacques La-vac.
As Tarzan thrust his trident into the heart of a second antagonist, the remaining beasts swam away in defeat. D'Arnot dropped to one knee beside Lavac and examined him as best he could; then he stood up and shook his head. The others understood; and sadly the three turned away and resumed their fruitless search, wondering, possibly, which would be the next to die in this land of danger and sudden death.
At last, by signs, they agreed to abandon the search, for even d'Arnot now felt certain that Helen must be dead; and, following Herkuf, who had brought the casket with him, they scaled the steep ascent to the lake shore, emerging at last a short distance below Ashair.
D'Arnot was heart broken; Herkuf was filled with renewed hope, for he knew what the casket contained and what it meant to him; only Tarzan of the Apes was unmoved. "Brulor is dead," he said, "and The Father of Dia-monds stolen. I must return to Thobos as I promised Herat ."