Nu sat at one end of the clearing upon a flat rock. About his shoulders fell the shaggy haired skin of a huge cave-bear. In the string that supported his loin cloth reposed a wooden handled stone axe and a stone knife. Upright in his hand, its butt between his feet, rose a tall, slim spear, stone tipped. His black hair was rudely cut into a shock. A fillet of tiger hide encircled his head, supporting a single long, straight feather. About his neck depended a string of long, sharp fangs and talons, and from cheek to heel his smooth, bronzed hide was marked with many scars inflicted by these same mementos when they had armed the mighty paws and jaws of the fierce denizens of that primeval world. He let the skin that covered him slip from his shoulders, for the morning was warm. In that hot and humid atmosphere there was seldom need for covering, but even then men were slaves to fashion. They wore the trophies of their prowess, and bedecked their women similarly.

Tha, being second only to Nu, was the first among the warriors to speak. As speech was young and words comparatively few they must needs be supplemented with many signs and gestures. Oratory was, therefore, a strenuous business, and one which required a keen imagination, more than ordinary intelligence, and considerable histrionic ability. Because it was so difficult to convey one's ideas to one's fellowmen the art of speech, in its infancy, was of infinitely more value to the human race than it is today. Now, we converse mechanically—the more one listens to ordinary conversations the more apparent it becomes that the reasoning faculties of the brain take little part in the direction of the vocal organs. When Tha spoke to Nu and the warriors of his tribe he was constantly required to invent signs and words to carry varying shades of meaning to his listeners. It was great mental exercise for Tha and for his audience as well—men were good listeners in those days; they had to be and they advanced more rapidly in proportion to our advancement, because what little speech they heard meant something—it was too precious to waste, nor could men afford to attend to foolish matters where it required all their eyes as well as their ears and the concentration of the best of their mental faculties to follow the thread of an argument.

Tha stepped to the center of the group of warriors. There was a little open space left there for the speaker. About it squatted the older men. Behind them knelt others, and behind these stood the young men of the tribe of Nu.

Tha uttered a deep rumbling from his chest cavity. He shook his giant frame.

"The ground roars and trembles where we live," he said. "The cliffs will fall." He pointed toward their dwellings, making a gesture with his open palms toward the ground. "We shall all be killed. Let us go. Let us seek a new place where the ground does not tremble. The beasts are everywhere. Fruit is everywhere. Grain grows in the valley of every river. We may hunt elsewhere as well as here. We shall find plenty to eat. Let us take our women and our children and go out of this place."

As he spoke he mimicked the hunting of game, the gathering of fruit and grain, the marching and the search for a new home. His motions were both dignified and graceful. His listeners sat in rapt attention. When he had done he squatted down among the older warriors. Then another rose—a very old man. He came to the center of the open space, and told, by word and pantomime, the dangers of migration. He recalled the numerous instances when strangers, in small parties and in great numbers had come too close to the country of Nu, and how they, Nu's warriors, had rushed upon them, slaying all who could not escape.

"Others will do the same to us," he said, "if we approach their dwellings."

When he had sat down Hud pushed through to the center from the ring of younger warriors. Hud desired Nat-ul, the daughter of Tha. Therefore he had two good reasons for espousing the cause of her father. One was that he might ingratiate himself with the older man, and the other was the hope that the tribe might migrate at once while Nu, the son of Nu, was absent, thus giving Hud uninterrupted opportunity to push his suit for the girl.

"Tha has spoken wisely," he said. "This land is no longer safe for man or beast. Scarce a moon passes that does not see the ground tremble and crack, and in places have faces of the mountains tumbled away. Any time it may be the turn of our cliff to fall. Let us go to a land where the ground does not tremble. We need not fear the strangers. That is the talk of old men, and women who are big with child. The tribe of Nu is mighty. It can go where it pleases, and slay those who would block its way. Let us do as Tha says, and go away from here at once—another great trembling may come at any moment. Let us leave now, for we have eaten."

Others spoke, and so great was the fear of the earthquakes among them that there was scarce a dissenting voice—nearly all wished to go. Nu listened with grave dignity. When all had spoken who wished to speak he arose.