Chapter 12 -THE SURPRISE ATTACK.

"An attack," gasped Jack.

"And we're not there to help old Bob," cried Frank, in an agony of apprehension. "Come on. Don't stop to finish dressing."

Shirt flapping out over his trousers, shoes unlaced, Frank frantically buckled on his revolver and cartridge belt, seized his rifle and started on a dead run through the trees. Jack did likewise.