Gene Wolfe’s “Book of the New Sun” tetralogy is said to be rife with alchemical symbolism. I have not read it yet, although it has been on my to-read stack for years. Nonetheless, here is a diagram for you, partly because it’s an easy post, but also for me, so that I can add interesting links as I might find them.

• The Shadow of the Torturer
• The Claw of the Conciliator
• The Sword of the Lictor
• The Citadel of the Autarch

Of course, there are a few other tetralogies that exist, although they are not as common as trilogies. One already mentioned on this blog is the Aeygpt Tetralogy by John Crowley.

Further Reading:

https://en.wikipedia.org/wiki/The_Book_of_the_New_Sun

https://en.wikipedia.org/wiki/Tetralogy

An Analysis Of The Alchemical Tradition Behind BOOK OF THE NEW SUN, Part I: Urth, Ushas, And Unus Mundus

An Analysis Of The Alchemical Tradition Behind BOOK OF THE NEW SUN, Part II: The Solve et Coagula of Terminus Est

An Analysis Of The Alchemical Tradition Behind BOOK OF THE NEW SUN, Part III: The Piteous Gate and A Dark Albedo

An Analysis of the Alchemical Tradition Behind BOOK OF THE NEW SUN, Part IV: Hethor, Typhon and the Temptation of Severian

An Analysis of the Alchemical Tradition Behind BOOK OF THE NEW SUN, Part V: The Aestivation Hypothesis and the Hierodules

An Analysis of the Alchemical Tradition Behind BOOK OF THE NEW SUN, Part VI: Tzadkiel and the Mystery of Yesod

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