"Nat-ul!" exclaimed Nu. "What has happened? What has changed you? Has the sickness come upon you, because of what you have endured—the sickness that changes the mind of its victim into the mind of one of the ape-folk? There is no woman for Nu but Nat-ul, the daughter of Tha."
"There is the stranger woman, Gron," cried Nat-ul, bitterly. "I saw her in your arms—I saw your lips meet, and then I ran away. Go back to her. I wish to die."
Nu sought her hand, holding it tight.
"You saw what you saw, Nat-ul," he said; "but you did not hear when I told Gron that I loved only you. You did not see me disengage her arms. Then I saw you far away, and the herders come and take you, and I did not even cast another look upon the stranger woman; but hurried after your captors, hiding close by until darkness came. That I am here, Nat-ul, should prove my love, if ever you could have doubted it. Oh, Nat-ul, Nat-ul, how could you doubt the love of Nu!"
The girl read as much in his manner as his words that he spoke the truth, and even had he lied she would surely have believed him, so great was her wish to hear the very words he spoke. She dropped her cheek to his hand with a little sigh of relief and happiness, and then he took her in his arms. But only a moment could they spare to sentiment—stern necessity called upon them for action, immediate and swift. How urgent was the call Nu would have guessed could he have looked into the hut where Throk lay upon his aurochs skins, wide eyed.
The man's muddy brain revolved many times the details of the coming of the fellow who had just asked the whereabouts of the prisoner. It was all quite strange, and the more that Throk thought upon it the more fully awake he became and the better able to realize that there had been something altogether too unusual and mysterious in the odd request and actions of the stranger.
Throk sat up. He had suddenly realized what would befall him should anything happen to the community because of his neglect of duty—the primitive communal laws were harsh, the results of their infringement, sudden and relentless. He jumped to his feet, all excitement now. Not waiting to find a skin to throw over his shoulders, he grasped his weapons and ran out upon the platform. A quick glance revealed the fact that no sentry was in sight where a sentry should have been. He recalled the stranger's query about the location of the captive, and turned his face in the direction of the further dwellings.
Running swiftly and silently he hastened toward the hut in which Nat-ul had been confined, and so it was that as Nu emerged he found a naked warrior almost upon him. At sight of Nu and the girl behind him Throk raised his voice in a loud cry of alarm. His spear hand flew back, but back, too, flew the spear hand of Nu, the son of Nu. Two weapons flew simultaneously, and at the same instant Nat-ul, Nu and Throk dropped to the planking to avoid the missiles. Both whizzed harmlessly above them, and then the two warriors rushed upon one another with upraised axes.
From every doorway men were pouring in response to Throk's cry. Nu could not wait to close with his antagonist. He must risk the loss of the encounter and his ax as well in one swift move. Behind his shoulder his ax hand paused for an instant, then shot forward and released the heavy weapon. With the force of a cannon ball the crude stone implement flew through the air, striking Throk full in the face, crushing his countenance to a mangled blur of bloody flesh.
As the Lake Dweller stumbled forward dead, Nu grasped Nat-ul's hand and dragged her around the corner of the dwelling out of sight of the advancing warriors who were dashing toward them with savage shouts and menacing weapons. At the rail of the platform Nu seized Nat-ul and lifted her over, dropping her into the water beneath as he vaulted over at her side.