The boy anticipated a serious time in getting away, but, although the men below flourished revolvers threateningly, no bullets were fired. He brought the machine around to the east in a moment and swept over the heads of the men below. The group remained at the summit as he passed over, swinging down over the camp.

There was naturally great excitement below, and the boy would have enjoyed the situation immensely if he had been sure of the safety of his chum. The occupants of the camp rushed out of their tents and threw their hands and voices into the air as he moved along, only a few yards above their heads. Again weapons were displayed but no shots came.

The boy circled the camp twice, but was unable to catch sight of Carl. Realizing that the boy had undoubtedly been taken to one of the tents, he turned the machine down the gorge to the valley and swept straight on toward the shelf of rock from which the red and green signals had been shown on the first night of their arrival in that vicinity.

By keeping to this route he was not obliged to ascend to the summit in order to leave the valley where the hunters’ camp was situated. When he came closer to the shelf of rock where the signal fire had burned, he saw three men standing in plain view.

“I reckon the whole population of British Columbia is centering in these hills,” the boy mused. “There must have been a dozen or more people in the hunters’ camp when I passed over it not long ago, and now here’s three more probably belonging to the same crowd.”

When the boy came within a few paces of the rock he whirled away to the south, not caring to seek a landing on the other side of the snowy ridge. As the machine lifted he saw two more men in the gorge or canyon which led from the summit down to the shelf.

“If the men who abducted Colleton and brought him into this country sought a location filled with peace and solitude, they will probably get out of it at the earliest moment,” Jimmie mused.

As the boy turned on full speed in the direction of his camp he caught sight of an object which caused him to hesitate and then set out in a circling tour of the valley.

What he saw was the plane of a flying machine lifting above the top of the ridge to the east.

CHAPTER XVIII.
THE MYSTERIOUS SIGNALS.