This was more a series of short stories from starting point of Dorothy acquiring new friends, the Wizard, and a series of unfortunate events. They travel from realm to realm encountering strange peoples. Definitely a Baum book.
My favorite chapter perhaps is the trial of Eureka. I loved this kitten. The chapter seemed a lesson on the problem with relying on pseudo-inductive reasoning. Hypotheticals without teasing out the data to show they reflect real situations are fantasies. Relying on fantasies to decide innocent and guilt are troubling.