To his surprise, the guide shrugged his shoulders and turned away. As Dick lowered himself through the trap, Toma strode to the doorway and stood looking out across the shimmering, sunlit vista of rocks and sandstone.

CHAPTER XVIII
IN THE TOILS OF HENDERSON

Returning to the main shaft, following a tour of exploration through the mine, Dick and Sandy were staggered by the discovery that during their absence some one had removed the rope and had closed the trap. Darkness enveloped them. The stream of light, which had poured through the wide opening in the floor of the cabin, had been cut off. The shock of the discovery for a moment unnerved the two young adventurers. The thing was incredible—almost past belief! Sandy raised his candle aloft and stared up through its flickering light. Dick smothered a cry, then stood mopping his perspiring face, too dumbfounded for words.

After the first shock of surprise, it occurred to Dick that Toma was playing a joke upon them. Piqued and resentful because of his and Sandy’s refusal to postpone the exploration of the mine, their guide had probably decided to teach them a lesson. No doubt, he wanted to frighten them a little in his effort to revenge his wounded feelings. Such an explanation seemed reasonable enough. It caused Dick to smile to himself and presently to chuckle aloud:

“Toma’s done this, Sandy. The old boy’s a little peeved because we wouldn’t listen to him. If we wait here a few minutes, he’ll relent and open the trap.”

They waited in silence. Sandy nudged Dick and laughed. In order to pass the time quickly, they went over and commenced to examine the sacks of gold, piled against one side of the shaft.

Ten, fifteen, twenty minutes—and no sound from Toma! Dick sat down and began mopping his face again. Sandy blew out his candle, grumbling to himself.

“A joke has its limits,” he sputtered. “In about two more seconds——”

Footfalls sounded overhead. A low rumble of voices, a clatter of something on the floor—and the trap came open. Light streamed down, lighting up the shaft.

“Bear!” exclaimed an unfamiliar voice. “Better keep back. They’re armed!”