CHAPTER XXII

_Sacrifice_ "Down in the pyramid! You went down there?" Herr Kreiss forgot even his absorbing experiments to exclaim incredulously at Chet's report. Guided by Towahg, Chet had returned to Happy Valley. There had been six days and nights to be spent, and he felt that he should tell Kreiss what he had learned. "Yes," said Chet dully; "yes, I went down." He was seated on a rock in the enclosure they had built. He raised his deep-sunk, sleepless eyes to stare at the house where he and Walt had worked. There Walt and Di…