Signs on the Horizons

One of the best known Qur’anic verses related to navigation is 41:35, “We shall show them Our signs upon the horizons and within themselves, until it be clear to them that He is the Real” (the change of grammatical person: “Our signs"/“He is”, is a typical Qur’anic figure (iltifāt), as if emphasizing that the “person” is always the One and Only).

As we have seen in recent posts, and as is made obvious in the design of the wind rose, the nautical rhumbs establish a direct relation between the central subject, i.e. the pilot or the vessel itself, and the peripheral object deployed in 360 degrees of possibility, divided in a conventional number of directions, 4, 8, 16, 32, 64. Seen on the two-dimensional pattern, as seen from a stationary position, the horizon is the utmost limit, the non plus ultra. The natural state of the landlubber is this beyond-less confinement, where the signs on the horizon are informative, recreational, interesting, even fascinating.

But there are the travellers, those who move on. And there are the astronomers, the true astrologers who have intimate knowledge of the movement of the cosmos, of the law of movement, whereby mighty lights rise from the horizon, run their course, and set, inexorably.

For such pilots and knowers of the spheres, the signs are an existential reality, a living knowledge: “beyond” and “self” merged, the horizons are not a limit, but a stage of the journey—onward they sail, guided without error by the stars whose love is in their heart. For them, in their journey Home, the horizons from within themselves reverberate encircling one another, circle upon circle upon circle… [JA]

Nautical Melothesia

Melothesia is not a word you encounter every day at the supermarket, and yet it names an idea that never ceased to accompany civilization until the advent of our modernity. Straight from the Greek μελοθεσία, the “assignment of parts” or the “apportioning of limbs”, it refers to the vital correspondence between the parts of the human body and the divisions of the sky; it is the immemorial macrocosm-microcosm doctrine, and one of the applications of the Emerald Tablet’s famous opening sentence: “As above, so below.” There are famous images about it across cultures, most known to us as one or other kind of “Zodiac Man” image, the homo signorum.

One of the best known depictions of melothesia,
from the Très Riches Heures du duc de Berry, 15th c.

Melothesia was not limited to correspondence of the body with the duodecimal solar zodiac signs. There was also a nakshatra-purusha in Indian tradition, the “Lunar Stations Man”, i.e. based on the lunar zodiac division of 27/28 divisions; and other cultures had analogous correspondences based on different divisions.

27 lunar stations on the body of Vishnu.

Melothesia was generally associated with medicine, martial arts, music… but in early modern Arab navigation we also have a fascinating analogue and a true nautical melothesia based on the division of the horizon in 32 rhumbs. The basic practice, details of which we will be reading about during the coming weeks, is that the ship, instead of the body, is virtually divided in 32 “directions” projected from the compass card, as if the wind rose were projected around the ship’s deck. For example, if we assign the north to the bow, then the stern will correspond to the south. This way, the parts of the vessel are mapped onto the directions, and by focusing on a part of the vessel, a certain destination will be reached.

This strictly practical application of the immemorial macrocosm-microcosm doctrine illustrates the better-known astrological and alchemical doctrines making them more concretely understandable. In fact, it seems to echo the astrological adage: “character is destiny,” which then, put in navigation terms, might be: “The disposition of your rhumbs will determine your destination.” Destiny–Destination, perhaps just one among many pairs of crucial terms of ancient cosmologies which are illuminated by an unbiased study of medieval technoscience. [JA]

Us vs. Them: Early Modern Nautical Othering

Reading through the initial pages of chapter 4 of the Fawā’id, we came last week across a remarkable passage on Mediterranean/European vs. Indian Ocean/Arabic nautical techniques. The Westerners are in fact called here by Ibn Mājid “the people of the Egyptian abodes”:

…they have the compass, and in it they have lines, and marks for miles, and their rhumbs are only sixteen… We use thirty-two rhumbs… and they are incapable of understanding our level of attainment, whereas we do reach as far as their knowledge goes and we can sail their ships, for the Indian Ocean is connected to the Atlantic Ocean (al-Bahr al-Muhīt), and it has a knowledge recorded in writings and stellar altitude measures…

Leaving aside other technical details for a future occasion, let us focus on these final lines, where we find one striking assertion and one subtly insightful statement.

The first one is striking if we consider that Ibn Mājid is writing this probably in the 1490s, just as the Portuguese started rounding the Cape (Bartolomeu Dias, 1488), and yet he takes as a given the connection of the two oceans. This is no novelty if we remember that al-Birūnī (11th century), already spoke clearly of this connection with al-Bahr al-Muhīt. Literally the Circumambient, or All-Encompassing Sea, this was the most frequent Arabic name for the Atlantic—while still carrying echoes of the archaic notion of a Universal Surrounding body of water, what the Greeks called Okeanos. We wonder anyway, had Ibn Mājid also had news of the Dias expedition?

Sebastian Münster 1554 map

The second statement is this idea that there was a written body of Indian Ocean nautical science, and that it was this, combined with a certain knowledge of astronavigation, which gave Arab sailors the edge over those “Egyptians”. We have by now got used to Ibn Mājid boasting about his own writings, but here it does certainly sound as if he is referring also to a traditional, well known, nautical corpus. Of these possibly lost writings we have, alas, only the faintest traces left in medieval Arabic literature… what a sunken Atlantis of maritime treasures! [JA]

Between Heaven and a Vast Place

Just a pause for thought as we prepare to start a new chapter of the Fawā’id. Last week we completed the longest chapter, on the twenty-eight lunar stations (manāzil al-qamar), and now we move on to a chapter on the thirty-two stellar rhumbs (akhnān). We shall soon have occasion to go into more detail regarding the rhumbs, but for now it may be useful to consider the connections between the two topics.

The path of the lunar stations goes roughly along the inclined red line. The 32 stellar rhumbs are laid out on the horizontal of the equator, one rhumb each 11 1/4°.

The system of lunar stations is—schematically—an equal division of the sky. The system of stellar rhumbs is an equal division of the entire circle of the horizon, based—schematically—on the rising points of a set of sixteen stars. In theory, their rising points and their diametrical opposites define the compass points. Interestingly, in the Mediterranean, the same division of thirty-two compass points was “based” on the winds, and there were quite complex names of the winds!

So we have one “vertical”, or at least celestial, positioning system, and one horizontal system. Between them, as if availing himself of the possibilities of this conjunction, is the master pilot, a tiny dot with his vessel in the middle of the ocean: so small and insignificant, and yet, thanks to his knowledge (scientia), in command of the situation, following an invisible path through the deep water. Stay tuned for many more details over the coming weeks, digging into the facets and subtleties of the knowledge and practice of the stellar rhumbs. [JA]

The Forelegs of the Lion

In ancient Arabian tradition, the constellation of the lion (al-Asad) was depicted in the night sky with two forelegs, al-Dhirā‘ān. It was greater than the zodiac lion familiar to the modern observer, for one of its legs was placed on Gemini (α and β, Castor and Pollux) and the other was on Canis Minor (Procyon and Gomeisa). Taken together—Ibn Mājid tells us—these four stars form the seventh lunar mansion: al-Dhirā‘ān. 

Where navigation is concerned, the knowledge of a lunar mansion also entails the knowledge of possible combinations between its elements and other stars or asterisms. This is so because the alignment between certain stars could indicate not only a specific course or time, but also—and perhaps most importantly—the altitude of the polar star and, thus, the latitude.

Beginning to read Ibn Mājid’s introduction to al-Dhirā‘ān, we readers are immediately apprised of its connection with the Two Vultures (Vega and Altair). Each Leg of the lion is said to rise nearly at the same place where each Vulture rises, but they are located on opposite sides of the sky. This way, by the time Vega is rising on one end, the lion’s leg in Gemini is setting on the other. Eventually, both asterisms are seen leveled just above the horizon—a signal to every pilot (mu‘allim, “the one who knows”) indicating that the polar star is then at its minimum height. [IB]

The Magic Circle

Being didactic is a notable trait of Ibn Mājid’s style. These are not cold, detached manuals. Instead, you find throughout his works series of imperatives exhorting the “seeker”, the “questioner”: “understand and know, strive and realize your knowledge,” because “the cases and causes of the sea are many.”

Now, the first thing on the list is “the actual knowledge” of “the magic circle of the rhumbs and mansions (mandal al-akhnān wa-al-manāzil).”

When Ibn Mājid elaborates on the details of the relation between the thirty-two rhumbs and the twenty-eight lunar mansions, on how to lay them upon the circle of the compass in order to plot your course, the immediate and unexpected analogy coming to mind is that of the Far Eastern luopan. This geomantic compass, or Feng Shui compass, is an outright “magic circle” where a central magnetic needle is surrounded by the concentric sequences of signs in spheres of knowledge. “Ponder and ask for advice, and wake the night and be resolute.” Every time, the navigator is virtually at the centre of the universe to perform his task. [JA]

Cosmic Magnetism

Last Wednesday we were once again taken by Ibn Mājid on an entertaining and unexpected detour, and once again on occasion of the magnetic compass (or rather on the stone itself, al-maghnātīs, lodestone). Adding to the association with King David, we learnt that according to other sources, the discovery of al-maghnātīs is due to al-Khidr, the enigmatic Qur’anic sage and immortal wanderer who looks after travellers and craftsmen… or according to others, it was discovered by Alexander the Great (Dhu’l-Qarnayn)—and anyway the two of them were cousins!

And then things took a cosmic turn: “For the seven heavens and the earth are suspended (or “held together”) by the Magnet of Power” (maghnāṭīs al-qudrah, but those uppercase letters certainly look appropriate here!). I have tried to find similar images in Islamic or other cosmologies, but so far it seems quite unique. There may be something in Indian or Chinese mythology, and it might shed light on the still debated ultimate origin of the magnetic compass. Suggestions are welcome.

Lodesone picture from the collection at Kenyon College.

Then, to round off his explanation, as if to make sure people get his meaning, Ibn Mājid regales us with the only thing he dared write “on such an uncertain matter”, which happens to be a love poem:

Your house is the magnet of my feet when I walk
And you yourself the magnet of my heart and my eyes.

Now, this was unexpected: like Aristotle, when compelled to make understandable the basic force that holds the universe together, he calls upon love and desire. It is quite something to imagine the audience of Ibn Mājid reading these lines, but perhaps less than taking in the gist of his analogy: that from Ibn Mājid’s feet, to the planets and galaxies, to any little magnetic compass in our hands, the same cosmic force is drawing us and guiding us to our destination. [JA]

The Killer Stone

As we continue to read on the mythical origins of navigation, ever so gradually entering into nautical technicalities, we came to a passage where the importance of the magnetic compass for navigation is mentioned. The word used is al-maghnātīs, magnetite, or rather, given the context, a piece of lodestone or naturally charged magnetite. As expected, Ibn Mājid tells us that the craft of navigation is not complete without it. What is unexpected is the scriptural turn: this maghnātis was an invention of King David (yes, the Biblical and Qur’anic prophet), and moreover, it was with this stone that he killed Goliath.

From a manuscript of Stories of the Prophets
Spencer Collection, The New York Public Library.
David stands on the left with his sling.

We do not normally associate a magnetic compass with violence, but this association echoes somewhat the violent origin of the word “route”, ultimately from the Latin (via) rupta, the broken way, as when someone breaks a way through and is “groundbreaking” and “trailblazing”. A “rutter” is, accordingly and originally, the testimony to a violent act, often having to do with braving the perils of long journeys, but essentially and always the internal violence of forcing the limits of knowledge.

The image of the giant, symbol of hostile ignorance and evil, as “the (magnetic) stone sank into his forehead” (1 Samuel 17), is a powerful reminder of the inner struggle of every scientific endeavour and of the image of the “crest-jewel” and the “sword of discrimination”. The implicit imperative, for anyone engaged in any path of knowledge, is the one in the Mahabharata: “Fight, son of Pandu, and win!” [JA]