"Old longings nomadic leap, chafing at custom's chain; again from its brumal sleep wakens the ferine strain."
"At the first step upon the cold surface, Buck's feet sank into a white mushy something very like mud. He sprang back with a snort. More of this white stuff was falling through the air. He shook himself, but more of it fell upon him. He sniffed it curiously, then licked some up on his tongue. It bit "
"But something was changing in Buck. He had lived in the north a long time now, and he was almost a wild dog. He was happy to sit by Thornton's fire, but he sat as a wild animal, and his dreams were filled with other animals—dogs, half wolves, and wild wolves. They seemed to call him into the forest,"