Looking straight at Duncan, with the flicker of a smile upon its lips, the native cut its throat.

V

e should go back, he knew. Without the tracker, he didn't have a chance. The odds were now with the Cytha—if, indeed, they had not been with it from the very start.

Unkillable? Unkillable because it grew in intelligence to meet emergencies? Unkillable because, pressed, it could fashion a bow and arrow, however crude? Unkillable because it had a sense of tactics, like rolling rocks at night upon its enemy? Unkillable because a native tracker would cheerfully kill itself to protect the Cytha?

A sort of crisis-beast, perhaps? One able to develop intelligence and abilities to meet each new situation and then lapsing back to the level of non-intelligent contentment? That, thought Duncan, would be a sensible way for anything to live. It would do away with the inconvenience and the irritability and the discontentment of intelligence when intelligence was unneeded. But the intelligence, and the abilities which went with it, would be there, safely tucked away where one could reach in and get them, like a necklace or a gun—something to be used or to be put away as the case might be.

Duncan hunched forward and with a stick of wood pushed the fire together. The flames blazed up anew and sent sparks flying up into the whispering darkness of the trees. The night had cooled off a little, but the humidity still hung on and a man felt uncomfortable—a little frightened, too.

Duncan lifted his head and stared up into the fire-flecked darkness. There were no stars because the heavy foliage shut them out. He missed the stars. He'd feel better if he could look up and see them.

When morning came, he should go back. He should quit this hunt which now had become impossible and even slightly foolish.

But he knew he wouldn't. Somewhere along the three-day trail, he had become committed to a purpose and a challenge, and he knew that when morning came, he would go on again. It was not hatred that drove him, nor vengeance, nor even the trophy-urge—the hunter-lust that prodded men to kill something strange or harder to kill or bigger than any man had ever killed before. It was something more than that, some weird entangling of the Cytha's meaning with his own.