“I was weak from loss of blood,” replied Mr. Havens. “I camped last night in a valley occupied by hosts of yellow-haired porcupines.”

“I’ve heard of ’em,” Jimmie grinned.

“In the night,” the injured man went on, “I got out of my sleeping bag to mend the fire and stepped on a whole host of the fellows, cutting my feet into ribbons, almost.”

“Wouldn’t they get out of the way?” asked the boy.

“They never get out of the way!” was the answer. “Instead, they will walk in a man’s path, like a pet kitten, and refuse to turn aside.”

“Did you get the quills all out of your feet?”

“I don’t know whether I did or not. They bled terribly, and I am now in great pain with them. You boys will have to find out about that later on! I’m too tired now to talk.”

Ben now brought a kettle of blood-warm water while Carl appeared with a cup of strong coffee. After the aviator had swallowed the coffee, the bandages were removed and his feet carefully examined. There were many quills still in the flesh, they having worked in instead of out, as is usual in such cases. These had caused the bleeding to continue, and this in a measure accounted for Mr. Havens’ weakened condition.

By midnight the aviator was able to sit up and listen to the story of the two visitors.

“I quite agree with you,” he said, after Ben had concluded the recital, “there is no doubt in my mind that the men are simply mountain bums. And I’m afraid that we’ll have trouble with them in future. These machines must be guarded night and day!”