The Turtles of Tasman

Frederic Travers, a responsible man of high standing, gets a visit from his dying brother Tom, a globetrotting vagabond. It's a study in contrast between the two men, who each embody opposing aspects of London's character: the successful workaholic vs. the wandering adventurer. The writing is very mature and insightful, indicative of some of the more accomplished work of London's later career.