Which book in publication order is The Silver Chair?

In publication order, The Silver Chair is the fourth book in The Chronicles of Narnia.

Geoffrey Bles published the novel in 1953, after The Voyage of the Dawn Treader and before The Horse and His Boy. It follows Eustace Scrubb and introduces Jill Pole, who are sent by Aslan to find Prince Rilian, the missing son of the aging King Caspian.

The main source of confusion is that modern editions often arrange the books by Narnian chronology rather than by publication date. In that chronological sequence, The Silver Chair is usually numbered sixth, because its story occurs long after the events of The Lion, the Witch and the Wardrobe and several other novels.

Lewis also wrote the book fifth among the Narnia stories, even though it appeared fourth. The publication-order numbering therefore distinguishes the novel’s release position from both its internal chronology and its place in Lewis’s writing process.