B. J. Harrison Reads When the World Was Young and Moon-Face

"When the World Was Young" introduces us to a thief named Dave Slotter, who intends to steal from James Ward - a famous and wealthy businessman. However, while Slotter walks through Ward's property, he encounters a wild barbarian and is forced to fight for his life.
Will Slotter escape from the wild man who wants to kill him? Who is the barbarian and what is he doing on Ward's lands? Will the thief succeed in his plan?

"Moon-Face" introduces us to John Claverhouse, a man who is unreasonably despised. The narrator of this story does his best to get rid of the poor man but fails with every attempt. However, tired of all his failures, the narrator decides to kill Claverhouse. For this purpose, he buys a dog.
Why is Claverhouse hated by everyone? Why does the nameless narrator want to kill the man? How is the dog going to help him with his vicious plan?