That man, John Thornton, had earlier saved the central figure in this novel, a St. Bernard-collie mix who had been kidnapped from the California home of Judge Miller.
One character in this novel is referred to as the "Scottish Half Breed" and is responsible for delivering mail.  Other characters in this novel include Hal, Mercedes and Charles, who die while trying to cross ice weakened by the arriving spring. Another character is killed by Yeehat Indians while camping. That man, John Thornton, had earlier saved the central figure in this novel, a St. Bernard-collie mix who had been kidnapped from the California home of Judge Miller. For 10 points, identify this novel about the sled-dog Buck that was written by Jack London.
One character in this novel is referred to as the "Scottish Half Breed" and is responsible for delivering mail.  
The Call of the Wild