Regio Patalis is Latin for "the Region of Patala". It took its name from the ancient city of Patala (now Thatta) at the mouth of the Indus River. By medieval times its actual location had been lost to the Europeans, and it appeared on late 15th and early 16th century maps and globes in locations ever eastward and southward of India, eventually appearing as a promontory of the Antarctic continent, Terra Australis.
The Regio Patalis in classical literature
Pliny the Elder (Gaius Plinius Secundus, 23-79 AD) referring to “the island of Patale, at the mouth of the Indus”, wrote in Historia Naturalis: “Also in India [as well as at Aswan in Egypt] at the well-known port of Patale the sun rises on the right and shadows fall southward”.
The geographer Strabo (c.64 BC–c.24 AD) had said: “The Indus falls into the southern sea by two mouths, encompassing the country of Patalênê, which resembles the Delta in Egypt”. He noted: “All these [nations] were conquered by Alexander, and last of all he reduced Patalênê, which the Indus forms by splitting into two branches… Patalênê contains a considerable city, Patala, which gives its name to the island”.
In the late 2nd century BC, Agatharchides of Cnidus recorded merchants from Patala, or as he called it, Potana, coming to the island of Socotra to trade with Alexandrian merchants. The 2nd century AD author Dionysios Periegetes said in his Orbis Descriptio: “This river [the Indus] has two mouths, and dashes against the island enclosed between them, called in the tongue of the natives, Patalênê”.
Siltation has caused the Indus to change its course many times since the days of Alexander the Great, and the site of ancient Patala has been subject to much conjecture. Ahmad Hasan Dani, director of the Taxila Institute of Asian Civilisations, Islamabad, concluded: “There has been a vain attempt to identify the city of Patala. If ‘Patala’ is not taken as a proper name but only refers to a city, it can be corrected to ‘Pattana’, that is, [Sanskrit for] a city or port city par excellence, a term applied in a later period to Thatta [onetime capital of Sindh], which is ideally situated in the way the Greek historians describe”.
The eighteenth century French geographer, Jean-Baptiste Bourguignon d'Anville, also identified Thatta with Patala:“Tatta is not only a town, but also a province of India, according to modern travellers; this town has taken the place of the ancient Patala or Pattala, which formerly gave name to the country included between the mouths of the Indus.” This opinion was shared by Alexander Burnes, who voyaged up the Indus on a diplomatic mission in 1831-32, and wrote:"The antiquity of Tatta is unquestioned. The Pattala of the Greeks has been sought for in this position, and, I believe, with good reason; for the Indus here divides into two great branches; and these are the words of the historian:- ‘Near Pattala, the river Indus divides itself into two vast branches’ (Arrian, lib.vi). Both Robertson and Vincent appear to have entertained the opinion of its identity with Tatta". 
The reason for Pliny mentioning Patala, or as he called it, Patale, was to indicate that it, like the other places mentioned in the same chapter of his Natural History, particularly Syene (Aswan, in Egypt), was situated on or below the Tropic of Cancer and so shadows there were cast southward in midsummer, thus demonstrating the rotundity of the Earth. Pliny, writing in Latin, used the form, Patale: in accordance with convention, he treats Patala, being for him a Greek-derived noun, as a third declension Latin noun with the genitive form Patalis, as though its nominative case was Patale: hence, Regio Patalis not Regio Patalae.
Syene had been used by Eratosthenes of Cyrene in c.220 BC as a point of reference to measure the circumference of the Earth (by observing the angle of a shadow cast at Alexandria on the day of the summer solstice—eighty-three degrees—and deducting that from the ninety-degree right angle of the sun over Syene on the same day, from that deducing the acute angle—seven degrees—at the apex of the segment of the Earth’s circumference represented by the known distance from Syene to Alexandria—504 stadia—and then multiplying that distance by the value of that angle and dividing it by the 360 degrees of the whole circumference of the Earth: 252,000 stadia, or 39,690 km, an error of less than one per cent.
The Regio Patalis in Renaissance cosmography
The map of the world by the French mathematician and cosmographer Oronce Fine published in 1531 shows a large promontory attached to the continent of TERRA AVSTRALIS and extending northward almost to the Tropic of Capricorn: this promontory is named REGIO PATALIS (“Region of Patala”).
Fine’s TERRA AVSTRALIS with its REGIO PATALIS is apparently drawn from the globe of the German cosmographer Johann Schoener produced in Nuremberg in 1523. On this globe the Antarctic continent, called TERRA AVSTRALIS RECENTER INVENTA SED NONDUM PLENE COGNITA (“Terra Australis, recently discovered but not yet fully known”) also has a large promontory bearing the name REGIO PATALIS.
Schoener developed his globe from the globe made by Martin Behaim in Nuremberg in 1492. On Behaim's globe, India potalis is located south of the Equator on the Hoch India (High India, or India Superior) peninsula, the actual Indochina, on the eastern side of the Sinus Magnus (Great Gulf, the actual Gulf of Thailand). An inscription on Behaim’s globe explains that Hoch India (India Superior ), was situated so far to the South that the Pole Star was no longer visible: “because this land lies at the antipodes to our land”.
Martin Behaim’s source of knowledge of India Patalis was the Ymago Mundi of Pierre D'Ailly, a revised edition of earlier standard cosmographical works which d’Ailly wrote between 1410 and 1419. D’Ailly wrote: “according to Pliny we find there to be habitation under the Tropic of Capricorn and beyond. For the island called the Regio Pathalis has a well-known port where the Sun’s shadow falls southward, therefore the inhabitants always have the Sun to their North… I say therefore that the southern side of India extends to the Tropic of Capricorn near the region of Pathalis”.
In discussing the habitability of lands under the Torrid Zone and Tropic of Capricorn, D'Ailly drew on the Opus Majus, written around the year 1267 English monk and scholar Roger Bacon. With regard to the Regio Patalis, Bacon said: “the southern frontier of India reaches the Tropic of Capricorn near the Region of Patale and the neighbouring lands which are washed by a great arm of the sea flowing from the Ocean”. Patala was on or just south of the Tropic of Cancer, not south of the Equator, but somehow Roger Bacon had confused the Tropic of Capricorn with the Tropic of Cancer under which, on the day of the summer solstice, shadows at Patala were cast southward.
D’Ailly's Ymago Mundi served as the standard text book on cosmography during the 15th and early 16th centuries and so made widely current the view that there was a part of India, or of what was later called Indo-China, where the sun’s shadow always fell southward at noon: this part was the Region of Patala. This theory found expression on Martin Behaim's globe of 1492, where India potalis is located south of the Equator on the Hoch India peninsula on the eastern side of the Sinus Magnus, the actual Indochina. This concept of the Region of Patala is shown as Patalie regiã in the world map included in La Salade, a textbook of the studies necessary for a prince written by Antoine de La Sale and published in 1444.
Following Magellan’s circumnavigation voyage of 1519-1522, Johann Schoener identified South America with the extended India Superior (Indochina) peninsula, and so depicted it on his 1523 globe. He also split the Region of Patala (Regio Patalis) off from this peninsula and transferred it across the ocean to become a promontory of the Terra Australis. In this he was followed by Oronce Fine, whose mappemonde of 1531 shows the large REGIO PATALIS promontory on the continent of TERRA AVSTRALIS.
The REGIO PATALIS is shown on the globe in an armillary clock made by Jean Naze of Lyon in 1560, in a fashion similar to that on Schoener’s globe of 1523 and on Fine’s map of 1531. It is also shown on the Nancy Globe, made c.1535.
The world maps of the school of cartographers centred in and around the Norman port of Dieppe (the Dieppe Maps, include the Harleian, so-called after its former owner, Edward Harley, made by an unknown cartographer in the mid-1540s, that made by Pierre Desceliers in 1546, and also Guillaume Le Testu’s Cosmographie Universelle of 1555. On these maps, Fine’s REGIO PATALIS has evolved into the great promontory of Jave la Grande (Greater Java) which extends, like the Regio Patalis, northward from the Austral continent. This development may have been influenced by the phrase used by the Italian traveler Ludovico di Varthema in describing Java which, he said, “prope in inmensum patet (extends almost beyond measure)”. Although the word patet (“extends”) has no connection with Patala, the superficial resemblance may have misled them.
Terra Java in the Vallard Atlas of 1547, another product of the Dieppe school, bears the vestigial toponym patallis inscribed on its west coast. “Patal(l)is” is the genitive form of Patala, and therefore simply means “of Patala” without specifying the “what” of Patala—region, land, kingdom, port, or city—indicating that it is no more than a vestige of the original “Regio Patalis”.
The cosmography of the Dieppe mapmakers, particularly as regards the Austral continent, developed from that of Johann Schoener, through the work of Oronce Fine. Albert Anthiaume wrote in 1911: “Whence had the Norman cartographers drawn the idea of this continent [la Terre Australe]? From the bicordiform [two-heart shaped] mappemonde of Oronce Fine (1531), which he in turn had borrowed from Schoener....Most of the Norman cartographers, and particularly Le Testu, knew the works of Oronce Fine”.
In his study of Schöner‘s globes, Franz von Wieser, found that the derivation of Fine’s mappemonde from them was “unmistakeable (unverkennbar)”.
Schoener’s idea of the Regio Patalis developed, as explained above, from the earlier globe of Martin Behaim which itself was based on the works of Pierre d’Ailly, Roger Bacon and Pliny the Elder, and not on the accounts of any voyages to the unknown Austral continent, the Terra Australis Incognita.
Jave la Grande on the Dieppe maps, which was derived from the ideas of Johann Schoener, can be seen to be a construct of the cosmographical concepts of the early 16th century and not derived from the discovery of the coasts of Australia made by unknown voyagers of that time. This is seen on Guillaume Le Testu’s 1556 Cosmographie Universel, 4me projection, where the northward extending promontory of the Terre australle, called Regio Patalis by Schöner and Fine, is called Grande Jaue. French geographer Numa Broc has noted that the Dieppe cartographers, including Le Testu, replaced the Regio Patalis of Oronce Fine with a Grande Jave, more or less attached to an enormous austral land mass, and that their insistence on speaking of “la Grande Jave” permitted the erection of the hypothesis of a Portuguese or French “pre-discovery” of Australia between 1520 and 1530.
The Flemish cosmographer and map maker Gerard Mercator produced a map of the world in 1538 which, though modelled on that of Fine of 1531, departed from it by showing Fine’s southern continent much smaller, unnamed and bearing the inscription, Terra hic esse certum est sed quãtus quibusque limitibus finitas incertum (“It is certain that there is a land here, but its size and the limits of its boundaries are uncertain”). The outline of Fine’s Regio Patalis, though shown as a promontory of this smaller Antarctic continent, is likewise unnamed.
In 1564, Mercator’s Flemish contemporary, Abraham Ortelius published a world map, Typus Orbis Terrarum, on which he identified the Regio Patalis with Locach as a northward extension of the Terra Australis: ”This tract is called by some Patalis"; and "The Region of Locach seems to be placed here by Marco Polo the Venetian". The great promontory terminated in the north with New Guinea, "recently discovered, so called because its nature and climate do not differ from the African Guinea; apparently this tract was called Terra de Piccinacoli by Andrea Corsali".
From that time on, the outline of the Regio Patalis/Jave la Grande/Locach promontory gradually faded from the maps of the world.
- “In eadem India Patalis, celeberrimo portu, sol dexter oritur, umbrae in meridiem cadunt”; Gaius Plinius Secundus, Historia Naturalis, Book II, cap.xii, 25 and cap.lxxv: 184; quoted in John Watson McCrindle, Ancient India as described in Classical Literature, being a Collection of Greek and Latin Texts relating to India, Westminster, Constable, 1901, p.188.
- Strabo, Geography, bk.XV, c.13, quoted in McCrindle (1901): 19.
- Strabo, Geography, bk.XV, c.33; quoted in McCrindle (1901): 40.
- The only surviving copy of Waldseemueller’s 1507 map is now held by the Library of Congress, Washington DC, and a hi-resolution image of it can be found at: http://www.loc.gov/rr/geogmap/exh.html
- Agatharchides of Cnidus, On the Erythraean Sea, translated and edited by Stanley M. Burstein (London, Hakluyt Society, 1989): 169.
- Dionysios Periegetes, Orbis Descriptio, lines 1080-1165; quoted in McCrindle (1901): 188.
- A.H. Dani and P. Bernard, “Alexander and His Successors in Central Asia”, in János Harmatta, B.N. Puri and G.F. Etemadi (editors), History of civilizations of Central Asia (Paris, UNESCO, 1994) II: 85. Herbert Wilhelmy has pointed out that siltation had caused the Indus to change its course many times over the centuries and that in Alexander’s time it bifurcated at the site of Bahmanabad, 75 kilometres to the north east of Hyderabad, which John Watson McCrindle had considered to occupy the site of ancient Patala: Herbert Wilhelmy, “Verschollene Städte im Indusdelta“, Geographische Zeitschrift, 56: 4 (1968): 256-294, n.b. 258-63; McCrindle (1901): 19, 40, 124, 188; idem, The Invasion of India by Alexander the Great, Westminster, Constable, 1893, pp.356-7.
- Jean Baptiste Bourguignon d'Anville, A Geographical Illustration of the Map of India, Translated by William Herbert, London, 1759, p.19; "Tatta est non seulement un ville, mais encore une province de l'Inde, selon les voyageurs modernes. La ville ainsi nommée a pris la place de l'ancienne Patala ou Pattala, qui donnoit autrefois le nom à terrain renfermé entre les bouches de l’Indus." Jean-Baptiste Bourguignon d'Anville, Eclaircissements géographiques sur la carte de l'Inde, Paris, Imprimerie Royale, 1753, p.39. D'Anville, Orbis Veteribus Notus
- Alexander Burnes, Travels into Bokhara: Containing the Narrative of a Voyage on the Indus, London, Murray, 1839, Vol.I, p.27. William Robertson, An Historical Disquisition concerning Ancient India, Basel, Tourneisen, 1792, pp.20: “Patala (the modern Tatta)”; p.40: “Pattala (now Tatta).” William Vincent, The Commerce and Navigation of the Ancients in the Indian Ocean, London, Cadell and Davies, 1807, p.138. “Tatta, the Páttala of the ancients.”
- Cf. J. André et J. Filliozat: “Patale (71) ou Patala (72) transcription de gr. τα Παταλα [ta Patala]”, Pline l’Ancien: Histoire Naturelle, Texte Établi, Traduit et Commenté, Paris, Société d’Éditions les Belles Lettres, Livre VI, 1980, p.109.
- Carl Sagan, Cosmos, New York , Random House, 1980, p.15.
- Robert J. King, "Terra Australis Not Yet Known", National Library of Australia, Mapping our World: Terra Incognita to Australia, Canberra, National Library of Australia, 2013, p.82.; A hi-resolution image of Fine’s 1531 map can be found at: http://library.sl.nsw.gov.au/search~S2?/Xd:(crux)&searchscope=2&SORT=R&f=e&f=f/Xd:(crux)&searchscope=2&SORT=R&f=e&f=f&SUBKEY=d%3A(crux)/1,71,71,E/l856~b2431215&FF=Xd:(crux)&searchscope=2&SORT=R&f=e&f=f&31,31,,1,0
- Lucien Gallois, Les Géographes allemands de la Renaissance (Paris, Leroux, 1890, repr. Amsterdam, Meridian, 1963): 92; Franz von Wieser, Magalhães-Strasse und Austral-Continent auf den Globen Johannes Schöner (Innsbruck, 1881): 65.
- F.C. Wieder (ed.), Monumenta Cartographica (The Hague, Martinus Nijhoff, 1925) I: 1-4, “The Globe of Johannes Schöner, 1523-1524”, and Plates 1-3.
- George E. Nunn, The Columbus and Magellan Concepts of South American Geography (Glenside, Beans, 1932): 45, 58.
- E.G. Ravenstein, Martin Behaim: His Life and His Globe, London, George Philip & Son, 1908, p.95.
- daſs macht daſs deſſelb landt ligt recht fuſs gegen fuſs gegen unſer landt; Ravenstein (1908): 95.
- “secundum Plinium habitationem esse sub Capricorni tropico & ultra. Nam regio Pathalis insula dicitur habens portum celeberrimum ubi umbre solum in meridie cadunt, ergo habitatores ei habent semper Solem ad Aquilonem.…Dico igitur frons Indie meridianus pellitur ad tropicum Capricorni propter regionem Pathalis (Pierre d’Ailly, Ymago Mundi, Louvain, 1483, cap.xi, xv). See also Alfred Hiatt, Terra Incognita: Mapping the Antipodes before 1600 (Chicago, University of Chicago Press, 2008): 182, n.103.
- The Opus Majus of Roger Bacon, translated by Robert Belle Burke (New York, Russell, 1962) 1: 328.
- Eva G.R. Taylor, review of E. Buron (ed), Ymago Mundi de Pierre d’Ailly, (Paris, Maisonneuve, 1930), in The Geographical Journal, vol.77, no.3, March 1931, pp.290-2.
- Ravenstein (1908): 95.
- Patalie regiã, Antoine de La Salle, Mappemonde de la fin du XVe siécle.
- A hi-resolution image of the 1531 Fine’s map can be found at: http://image.sl.nsw.gov.au/cgi-bin/ebindshow.pl?doc=crux/a127;seq=7
- Museumslandschaft Hessen-Kassel, Astronomisch-Physikalisches Kabinett, Inv. Nr. U45.
- B. F. De Costa, ”The Nancy globe”, The Magazine of American History, vol. 6, March 1881. pp.183-187.
- The Harleian Mappemonde, British Library, Add. MS 5413; Pierre Desceliers’ 1546 mappemonde is held by the John Rylands Library, University of Manchester; Guillaume Le Testu’s Cosmographie Universelle, 1555, is held at Vincennes, Bibliothèque du Service Historique de l’Armée de Terre, DLZ 14.
- Simon Grynaeus and Johann Huttich, Novus Orbis Regionum, Basel, 1532, Ludovico di Varthema, Itinerario, p.271; cited in Franz von Wieser, Magalhães-Strasse und Austral-Continent. Auf den Globen Johannes Schöner. Beitrage zur Geschichte der Erdkunde im xvi. Jahrhundert, Innsbruck, 1881 (reprinted Amsterdam, Meridian, 1967), p.67.
- Terra Java in the Vallard Atlas (1547); Image at: http://dpg.lib.berkeley.edu/webdb/dsheh/heh_brf?CallNumber=HM+29&Description=&page=1
- Albert-Marie-Ferdinand Anthiaume, "Un pilote et cartographe havrais au XVIe siècle: Guillaume Le Testu", Bulletin de Géographie Historique et Descriptive (Paris), Nos. 1-2, 19111, pp.35-202, n.b. p.176. See also Armand Rainaud, Le Continent Austral: Hypotheses et Découvertes, Paris, Colin, 1893, repr. Amsterdam, Meridian Pub. Co., 1965, p.291.
- Franz von Wieser, Magalhães-Strasse und Austral-Continent. Auf den Globen Johannes Schöner. Beitrage zur Geschichte der Erdkunde im xvi. Jahrhundert, Innsbruck, 1881 (reprinted Amsterdam, Meridian, 1967), p.67.
- Robert J. King, "Regio Patalis: Australia on the map in 1531?", The Portolan, issue 82, Winter 2011, pp.8-17.
- Numa Broc, "De l’Antichtone à l’Antarctique", Cartes et figures de la Terre, Paris, Centre Georges Pompidou, 1980, pp.136-49 ; and idem, La Géographie de la Renaissance (1420-1620), Paris, Bibliothèque Nationale, 1980, pp.171.
- Gerard Mercator’s 1538 map of the world is reproduced in Antoine de Smet and J. van Raemdonck (eds.), Les Spheres Terrestre & Céleste de Gérard Mercator, Bruxelles, Editions Culture et Civilisation, 1968.
- Günter Schilder, Monumenta Cartographica Neerlandica, Alphen aan den Rijn, Uitgevermaatschappij Canaletto, 1986, Vol.2.