We say he was horrified, for this rendered it absolutely impossible any further to trace his companions either by scent or sight.
For some time he sat musing bitterly on his sad fate, while his dog came and laid his head sympathizingly on his arm.
"Ah, pup!" he said, "I know ye'd help me if ye could! But it's all up now; there's no chance of findin' them--none!" To this Crusoe replied by a low whine.

He knew full well that something distressed his master, but he hadn't yet ascertained what it was.

As something had to be done, Dick put the buffalo robe on his steed, and mounting said, as he was in the habit of doing each morning, "Lead on, pup." Crusoe put his nose to the ground and ran forward a few paces, then he returned and ran about snuffing and scraping up the snow.

At last he looked up and uttered a long melancholy howl.
"Ah! I knowed it," said Dick, pushing forward.

"Come on, pup; you'll have to _follow_ now.