"I can't go another step."
"You've got to. Start on ahead. Don't crawl that way—walk! Faster! Faster than that, do you hear? I'm just behind you, and I shall step on your heels if you lag. Keep it up. Go on."
Panting, Bob obeyed.
Suddenly he gave a cry.
"What's the matter?" demanded Van.
"There! There on the tree!" He pointed before him with trembling hand. "Your sweater!"
Van pushed past him.
"Sure as fate! My sweater! Blamed if it isn't."
They both laughed weakly.
"Then we've found the trail!" Bob almost sobbed the words.