The general tone of the story is smart. It can be observed at the way the author wrote the story and his choice of words.For instance, the confrontation of the main hero and the chief of the village. At this scene, Keesh saved himself from Klosh-Kwan's accusation by revealing his secret of his marvelous hunting.
The story also has a good old style in literary work. Jack London,author of the story, used an English old style. This can be justified on some sentences in the story. He used the word "thou", meaning you. He also used figurative sentences for instance," The anger boiled a white heat".
We can deduced then that the story has a smart tone based on the author's choice of words and his attitude through his writing.