The Chronike von Nath is a fictional tome that first appeared as the Chronicle of Nath in "The Tree on the Hill" (1940), by Duane W. Rimel and H. P. Lovecraft. The Germanic form of the title first occurs in Rimel's "Music of the Stars" (1943).
In "The Tree on the Hill," the book is said to be "written by Rudolf Yergler, a German mystic and alchemist who borrowed some of his lore from Hermes Trismegistus, the ancient Egyptian sorcerer." The character Theunis consults "an early English translation" in "an old, leather-bound volume."
"Music and the Stars" expands on this lore: The Chronike von Nath was written
by the blind German mystic, Rudolf Yergler, who in 1653 finished his momentous work just before his sight gave out. The first edition sent its author to a madhouse in Berlin, and earned for itself a public suppression.
It was translated in 1781 by James Sheffield; despite his modifications, the text was still "wild beyond imagination."
Rimel wrote "A History of The Chronicle of Nath," a short essay that appeared in the fanzine Etchings & Oddseys (#9) in 1986.