How does Williard Holmes change over the course of the novel, The Winning of Barbara Worth?

When Williard arrives in the West, he is the epitome of the Eastern Dandy, except there is a solid core to him. By the end of the story, not only does his physical appearance alter — sun darkened skin, his gait now indistinguishable from one who was reared in the West — but his inner self as well has changed, from a Company man to a true man of the desert, doing his work for the benefit of his fellow man.