67. Amdusias: a duke of the Ars Goetia

How to read the labels Historical what the old sources say. Later tradition what later writers added. Modern modern practice and my own notes.

Amdusias is number 67 in the catalog of 72 spirits that opens the Lesser Key of Solomon. The 1904 edition by S. L. MacGregor Mathers and Aleister Crowley calls him a duke ruling 29 legions, and the first office it gives him is this: Amdusias causes trumpets and all manner of musical instruments to be heard, “but not soon or immediately.”

Here I go through his entry layer by layer: the old text first, then what later centuries added, then modern practice, each part labeled so you can see how old it is.

If you came here wondering whether Amdusias suits a beginner, the short answer is in the Practical notes below: he does not meet the three beginner criteria I use, and I explain why.

At a glance

Historical These are the facts of the entry itself, from the 1904 text and its Observations.

• Number: 67 of 72, in the 1904 order.
• Name and spellings: Amdusias in 1904; other spellings: Amdukias (1904), Amduscias (Weyer, Scot).
• Rank and legions: Duke, 29 legions.
• Metal of his rank (Observations): copper.
• Hours for dukes (Observations): “From Sunrise till Noonday in Clear Weather.”
• In Weyer’s catalog (1577): yes, as the source comparison below shows.

The Observations also say to work only when the Moon is 2, 4, 6, 8, 10, 12 or 14 days old. These rules show how the Goetia imagined its spirits, as officials with office hours. You do not need them to read the entry, and the facts table above gives the short version.

The seal (1904)

Historical The seal shown above is Amdusias’s seal as printed in the 1904 edition, in a faithful vector drawing of that public-domain printing. The Observations ask for each seal to be made in the metal of the spirit’s rank, which for Amdusias means copper. In the text’s world the seal identifies the spirit and protects the magician; several entries say it is worn on the breast as a lamen.

Seals are not identical from one source to the next. The 1904 versions follow the manuscripts Mathers used, and later books and websites sometimes redraw, simplify or mix them. If two seals for the same spirit disagree, ask which edition each one follows.

Modern Looking at a seal does nothing on its own; it is a drawing in an old book. Modern practitioners almost always draw seals on paper rather than casting them in metal. Copying Amdusias’s seal slowly by hand is also a good study exercise, because you notice lines and circles that the eye skips.

Appearance

Historical Amdusias appears “at first like a Unicorn, but at the request of the Exorcist he standeth before him in Human Shape.”

Offices in the Ars Goetia

Historical These are all the offices the 1904 text gives him, in the order it gives them.

• Causes trumpets and all manner of musical instruments to be heard, “but not soon or immediately.”
• Can cause trees to bend and incline according to the magician’s will.
• Gives excellent familiars.

He governs 29 legions.

Offices of harm or compulsion are part of the historical record, and reporting them is not endorsing them. For how offices work across the 72, see ranks and offices.

Source comparison: Weyer and Scot

Historical Scot’s Weyer gives “Amduscias” as “a great and a strong duke,” who “commeth foorth as an unicorne,” and in human shape causes “that trumpets and all musicall instruments may be heard and not seene,” and that trees bend. Weyer’s “heard and not seen” becomes the Goetia’s “but not soon or immediately,” likely a misreading of “seen” as “soon.” Both give 29 legions.

Weyer’s catalog appeared in 1577 and Reginald Scot translated it into English in 1584. Comparing the two with the 1904 text shows how much the Goetia owes to them, and where it changed or added things. More in Weyer and Scot.

Later tradition

Later tradition Collin de Plancy illustrates him as a man with a unicorn’s head.

Modern practice and pop culture

Modern Amdusias is a favorite of modern musicians, following his office of music.

Some things said about Amdusias online are not in any grimoire at all: personalities, favorite foods, signs that a spirit has “picked” someone, or birth demons. They come from modern writing and social media. Treat them as one person’s experience, not as facts about the old text.

Beginner’s quick reference

Each line below is labeled by layer, so you can see how old each piece is.

• Rank metal and hours (Goetia): Duke: copper; sunrise to noon, in clear weather.
• Planet (later tradition: Golden Dawn and Crowley’s 777): Venus.
• Decan and day or night spirit (later tradition: 777): Aquarius, first decan (0 to 10 degrees); night spirit. 777 decan incense: euphorbium (a toxic resin: do not burn or handle it).
• Commonly reported color, incense, and plant (modern UPG; sources copy each other): Color green; incense sandalwood; plant mimosa.
• Associated symbols: Goetia image: a unicorn; later a man, with trumpets and other instruments heard. 777 Magical Image: a unicorn, then a “Dilatory bandmaster.” Le Breton engraving (1863): a unicorn-headed figure seated among trumpets. Modern Demonolatry/UPG: the seal, used as an altar image; one practitioner’s blog adds a bird.
• Associated offerings: Modern practice, not in the Goetia manuscripts: most often listed, mimosa and sandalwood; one source adds hibiscus, ginger, cinnamon, and bayberry.

Incense means smoke. If you burn any, use a stick or cone with a window open, no charcoal indoors, and none at all in a home with pet birds or anyone with asthma. A plant listed here is a correspondence, not something to eat or burn, and a plant without a warning is not automatically safe. Modern offering lists copy one another, so “most often listed” means widely copied, not confirmed. Water, light, time or a note of thanks is always enough.

Practical notes

Amdusias is a duke whose offices are music and bending trees. Neither is harmful. He does not have a teaching office in the strict sense, but a question about your own music practice would be a reasonable first contact. The “not soon” versus “not seen” change is a fine example of how copying changes a text.

The beginner criteria I use have three parts: the spirit is not a king, at least one office is teaching, and the entry does not center on harm, deception or compulsion. In the directory, Amdusias is not among the 31 spirits that fit.

To compare Amdusias with other spirits of his rank, read Haures and Dantalion. Dukes are the largest group in the Goetia. The 1904 Classified List counts 23 of them, and their offices range from teaching languages to causing storms. A duke sits below kings and princes in the court the text imagines, and in the Observations dukes have the shortest hours: from sunrise to noon, in clear weather.

How to study this entry

Studying Amdusias needs only the texts, a notebook and some patience. This is the method I suggest for every entry.

1. Read the offices above in order and write each one in your own words.
2. Compare the 1904 wording with Scot’s English in The Discoverie of Witchcraft (Book 15, chapter 2), which is free to read online.
3. Copy the seal by hand, slowly, and note anything you missed at first glance.
4. Keep a two-column log: what the text says on the left, and what you have read online or feel about it on the right.

Then go back to all 72 spirits and read a neighbor or two. The entries make more sense side by side than alone.