Cthäat Aquadingen

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The Cthäat Aquadingen is the title of a fictional book created by Brian Lumley. It first appeared in the short story The Caller of the Black. It also featured heavily in The Horror at Oakdeene and The House of the Temple.


Cthäat Aquadingen by Justin Hampton

The Cthäat Aquadingen is the work of author or authors unknown. It first came to light during the fourth century in Northern Europe. The first copies were written in a mixture of the now extinct Gothic Language and a strange dot-like script. A Latin translation was made in the twelfth century. Through out the ages numerous personal translations have been made in languages such English, French and even Hindi.

The contents of the Codex Maleficum, the Codex Dagonensis and the Codex Spitalski may have been derived from the Cthäat Aquadingen.


The Cthäat Aquadingen deals primarily with the raising and putting down of water spirits. As well as Deep Ones, Zoth-Ommog and the Star Spawn of Cthulhu it also mentions more obscure beings such as Othuum. Other contents include: a paragraph on the creation of a certain sign, four pages of rituals pertaining to the Great Old One Tsathoggua, the Third and The Sixth Sathlattae, and the words of the Nyhargo Dirge.

The book talks at some length about Bugg-Shash and Yibb-Tstll, two entities which it terms "Drowners", as well as information about how to restrain these beings using Ye Soul-Searing Barrier of Naach-Tith.

Original version

This version was written part in Gothic and part in R'lyeh Glyphs. All copies of this version are presumed lost.

Latin Translation

The Latin translation made during the 12th century. Most copies are preserved in folio style. This version is over seven hundred pages long.

Hindi Translation

This possible unique translation contains additional information on the Small Crawler avatar of Nyarlathotep.

Joachim Ferry's Notes on the Cthäat Aquadingen

The noted occultist Joachim Ferry produced a collection of annotated quotes from the Cthäat Aquadingen in 1930. It seems considerably more uncommon than the author's Notes on the Necronomicon.

14th Century Middle English Translation

The rare 14th Century Middle English version of the Chaat Aquadingen (sic), containing a poorly-written story or recollection of the ritual for contacting Chaat, the Water God. The book belonged to a Chicago collector of antiquities, Herman Berk. Berk's copy had five pages torn from it in the 1920s; these five water-damaged and blood- and pus-stained pages were tipped back into the tome after their recovery. The tome may have since made its way into the rare occult book collection at Miskatonic University, through Berk's connection with that institution. (Scenario: "Dead Leaves Fall")

Role Playing Game Stats

Original Version  
Sanity Loss 1D8/2D8; Cthulhu Mythos + 14 Percent. Average 52 weeks to study and comprehend/106 hours to skim.
Latin Translation 
Sanity Loss 1D8/2D8; Cthulhu Mythos + 13 Percent. Average 46 weeks to study and comprehend/92 hours to skim.
Joachim Ferry's Notes on the Cthäat Aquadingen 
Sanity Loss 1D4/1D8; Cthulhu Mythos + 6 Percent. Average 8 weeks to study and comprehend/16 hours to skim.

A player who sucessfuly studies any complete edition of the Cthäat Aquadingen gains skill checks in Anthropology, Natural History and Occult.


Lest any brash or inexperienced Wizard be tempted to call forth one of ye Drowners - be it Yibb-Tstll or Bugg-Shash - this Warning shall guide him & inform him of his Folly. For ye Drowners are of a like treacherous & require ye most delicate Handling & minutest Attention to thaumathurgic Detail. Yibb-Tstll may only be controlled by use of ye Soul-Searing Barrier of Naach-Tith, & Bugg-Shash may only be contained in ye Pentagram of Power. Too, ye Drowners must be sent early about ye Business of them, which is Death, lest they find ways to turn upon ye Caller. Call NOT upon Bug-Shash for ye sake of mere idle curiosity; for ye Great Black One, neither him nor His Cousin, will return of His own Accord to His Place, but will seek out by any Means a Victim, beign often that same Wizard which uttered ye Calling. Of ye two is Bugg-Shash most treacherous and vilely cunning, for should no Sacrifice or Victim be prepared for His Coming, He will not go back without He takes His Caller with Him, must needs He stay an hundred Years to accomplish His Purpose....
Feery's Notes on the Cthaat Aquadingen, as portrayed by Brian Lumley in "The Kiss of Bugg-Shash"

Lethiktros Themiel, phitrithte klep-thos...
— part of the spell for Ye Soul-Searing Barrier of Naach-Tith from the Middle English version of the Cthäat Aquadingen - remaining text is corrupt and illegible.