in and get some sleep. We'll call you at three o'clock and then
take our turn at the pillow."

"You'll call us, of course, if anything happens?" asked Dave.

"If another powder mill blows up," chuckled Tom, "you won't need
to be called. You'll be out here on the jump."

Dave, Dan and Harry thereupon turned in. Knowing that others
were on watch the trio in the tent were all sound asleep within
five minutes.

Only the sighing of the wind through the trees, the occasional
splash of a leaping fish in the lake, and the subdued, musical
hum of tiny night insects came to the ears of Dick and his fellow
watchers.

Greg was soon yawning. Tom, for want of something better to do,
began describing all over again the strange apparition he and
Dalzell had seen that afternoon. Greg, finding the "creeps" in
Tom's narration to be stronger than the interest, shivered and
withdrew to a spot beyond the reach of Tom's whispers.

Not long after Greg, his back propped against a tree trunk, was
sound asleep.

Tom liked to talk. Prescott was a good listener, putting in a
question now and then.

So at least another hour passed. Then-----