Nothing but immediate flight might save the Thobo-tians; and as the prow of the galley turned quickly toward the lower end of the lake in an effort to elude the jaws of the closing circle of enemy galleys, Tarzan called to Helen and Herkuf to don their helmets as he adjusted his own; then, seizing Helen's hand and signalling Herkuf to follow, he leaped overboard with the girl, while Thetan urged his slaves to greater speed.
Chapter 29
HAND IN HAND, Tarzan and Helen sank gently down to the darkness of the lake's bottom. If Herkuf were near them, they could see nothing of him; and so Tarzan waited for the coming of the new day that would lift the black veil from the mysteries of Horus's depths, as to proceed without Herkuf might easily foredoom the entire venture to failure. That they might never find him, Tarzan was aware; but he could only wait and hope.
It was an eerie experience for Helen Gregory that was rendered doubly trying by the recollection of her previous experiences in this silent world of horrors. Dimly seen, great forms glided through the forest of grotesque treelike plants that waved their dark foliage on every hand. Momentarily, the girl expected some hideous monster to attack; but the night passed and dawn broke without their having once been threatened. It seemed a miracle to her, but the explanation probably lay in the fact that they had remained quietly sitting on the gravelly bottom. Had they been moving, it might have been different.
As the light of the new day filtered down to them, Tarzan looked about for Herkuf; but he was nowhere to be seen. Reluctantly, the ape-man started off across the lake toward the temple of Brulor . What he could accomplish alone, he did not know, as part of the plan was to enter the temple during a period of meditation and release the prisoners; but of the three, only Herkuf was familiar with the mechanism that operated the doors to the air chamber and emptied and refilled it; only Herkuf knew the exact time of the periods of meditation.
Unable to communicate with Tarzan, Helen followed where he led, ignorant of his new plans but more secure in her faith in him than he was of himself in this particular venture, where every condition varied so from all that he had been accustomed to meet in the familiar jungles that he knew so well.
They had gone but a short distance in the direction in which Tarzan thought the temple lay, when they came upon Herkuf. He, too, had been waiting for daylight, feeling certain that Tarzan would have done the same and that, having leaped overboard almost simultaneously, they could not be far separated. It was with feelings of the greatest relief that they found themselves reunited.
Herkuf took the lead now, and with Tarzan and Helen following, commenced the tiresome and dangerous journey toward Ashair, all of them now greatly encouraged after the long hours of doubt and uncertainty.
They had not gone far when they came upon the wreck of a large galley partly embedded in the sand. That it had been there for years was attested by the size of the marine growth which had sprouted through its ribs, entwining the skeletons of its slaves still lying in their rusted chains.
Herkuf evinced considerable excitement; and, motioning them to wait, clambered into the interior of the craft, from which he presently emerged carrying a splendid jeweled casket. That he was overcome by excitement was obvious, but hampered by his helmet he could only express it by waving the casket before their faces and dancing jubilantly. What it was he had recovered, they could not guess, unless it were that the casket contained treasure of fabulous worth.
At last, and without further adventure, they approached the temple of Brulor; and here they went cautiously, seeking the shelter of the trees and plants that grew in the gardens of the ptomes, moving stealthily from one to another, each time assuring themselves that no ptome was in sight, knowing that at any moment one might emerge from the air chamber that they could now see. Approaching the temple, they found a place where they could hide concealed from the gardens and the air chamber door. Here they must wait until Herkuf signalled that the time had arrived when it might be safe to enter the temple. How long that would be only he could guess with any degree of accuracy. Near them was a window through which they could have looked into the temple had they dared; but as long as it was light outside they could not take the risk; and so they waited, tired, hungry, and thirsty; waited for night to fall.
Inside the temple the caged prisoners were gnawing on their evening meal of raw fish. Atan Thome enlarged in glowing terms upon his plans when he should come into possession of The Father of Diamonds and dazzle the world with his wealth. Lal Taask, scowling, cursed him. Akamen brooded in silence upon his lost liberty and his vanished dream of power. Brian and d'Arnot spoke together in low tones. Lavac paced his cage like a captive polar bear.
"I think your friend, Tarzan, has run off and left us," remarked Brian.
"You think that because you don't know him as well as I do," replied d'Arnot. "As long as he and we live he will try to rescue us."
"He will have to be a super-man to do it," said Brian.
"He is—that and all of that. He may fail, of course, but he will come nearer succeeding than any man who lives."
"Well, anyway, he got Helen out of that torture chamber they'd put her in," said Brian. "Wasn't old Brulor sore, though! Of course he really hasn't had time to get her to a place of safety and come back for us; but every minute is an hour in here, and so it seems like a very long time since he went away. Did you know he was going?"
"Yes; he told me; but I didn't know when he and Herkuf left. I was asleep. I am sure he must have gotten her out; otherwise he'd have been back after us."
"Unless he was killed," suggested Brian. "Anyway we know he took her out. That was what old Brulor was raving about."
"I mean out of the lake—to some place of safety. Sometimes I think I'll go crazy if I don't know."
"We've got one nut here now," said Brian, nodding toward Atan Thome. "We couldn't stand another. Anyway, wait until you've been here as long as I have; then you'll really have an excuse to go cuckoo."
"They're all clearing out of the throne room now," said d'Arnot. "The period of meditation has come. I wonder what they meditate about."
"Meditate, hell!" exclaimed Brian. "Ask the handmaidens."
Outside the temple the weary trio waited. Since the evening before they had had neither food nor water, nor spoken a single word; but now Herkuf cautiously moved to a spot opposite the window but not too close to it. It was dark now, and there was little danger that he would be seen from the inside. The throne room was deserted except for the prisoners. He came back to Tarzan and Helen and nodded that all was right; then he left the casket at Helen's feet' and motioned that she was to remain where she was. She was very lonely after Tarzan and Herkuf left her.
This was the moment for which the two men had been waiting. What did it hold for them? Carrying out the plan they had carefully laid out in every detail, the two men each speared a fish; then, with their quarry wriggling on their tridents, they went to the air chamber. It was only a matter of a few moments before they had passed through it and stood in the corridor leading to the ptomes' room.