I think this is very high praise for Cap'n Bill's little companion. Cap'n Bill is also a new character who seems to have won approval, and so both Trot and the old sailor are again introduced in the present story, which may be called the second of the series of adventures of Trot and Cap'n Bill. But you will recognize some other acquaintances in "Sky Island." Here, for instance, is Button-Bright, who once had an adventure with Dorothy in Oz, and without Button-Bright and his Magic Umbrella you will see that the story of "Sky Island" could never have been written. As Polychrome, the Rainbow's Daughter, lives in the sky, it is natural that Trot and Button-Bright meet her during their adventures there.