the Cameron
stamp resort to all sorts of tricks and crimes, but they usually fight
shy of murder. I'm afraid, however, that the boys will be starved or
beaten up."

It was seven o'clock when the boys finally came to the south bank of the
rivulet, in the vicinity of the place where Sandy had encountered the
bear. The sun was now well in the west and the south side of the line of
cliffs lay in heavy shadows.

"If there's any deviltry going on," Will said, pointing to the summits
above, "it's right over there under those peaks!"

"I guess there's plenty of room under the peaks for mischief to be
plotted," Ed suggested, "I can see pigeon holes all along the cliff."

"Caves, do you mean?" asked Will.

"Sure," was the reply. "Those cliffs are of volcanic formation, and some
of the strata are softer than others, and the water has cut into the
heart of the range in many places."

"One would naturally suppose that such openings would be filled with ice
in Alaska," Will suggested.

"They may be filled with ice in the winter," answered Ed, "but in the
summer time they are hiding places for bears and crooked miners."

The boys advanced to the edge of the stream and Will swept his field
glass along the distant slope.

Presently he handed the glass to Ed.

"Tell me what you see," he said.

"I see something that looks like the eye of a wild animal looking out
over the valley!" answered the boy. "What can it be?"

"My first idea was that some one had built a fire in a cave," Will
answered, "but the more I look at it, the more I suspect that the light
comes from an electric."

"Then that must be the boys!" exclaimed Ed excitedly.

"But why don't they come on out?" asked Will, anxiously.

"Perhaps they have found Bert and don't want to leave him!" suggested
Ed.

While the boys watched the red light, which seemed to glimmer from the
very extremity of the cavern, it turned to blue!

"Now I've got it," cried Will almost dancing up and down in his
excitement, "you know what that means, don't you?"

"I can't say that I do!" replied Ed.

"It seems to me that the Portland Boy Scouts are not very well posted,"
laughed Will. "One of the boys--which one, I don't know, of course--is
talking to us in the Morse code!"

"Still I don't understand," said Ed.

"The red light means a dash," Will explained, "and the blue light means
the dot. Now we'll see if we can catch what the boy is saying."

"But where does he get the red