It must be Dick or Mr.Barrow, firing." "More than likely.

Let us follow up the shot." They listened, but no more shots followed, and then they went on, over a stretch which was comparatively smooth and free from brushwood.

But though they covered a quarter of a mile they saw nothing either of the river or of their lost companions.
"We're getting lost more than ever," groaned Sam.

"I declare I haven't the least idea where we are." "I'm going to fire another shot," answered his brother, and proceeded to do so.
Both listened with strained ears, and soon an answering shot came back, slightly to the left of the path they had been pursuing.
"Thank fortune, we are getting closer!" cried Sam.

"Come on!" As worn out as they were, they resumed the dragging of the sled through the snow.