Patalis not Regio Patalae. Syene is connected with the measurement of Earth's circumference by Eratosthenes of Cyrene in c.240 BC, although the method traditionally considered a used by Eratosthenes is actually a simplification of another author, Cleomedes, who proposed his readers to imagine to observe 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 — 500 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: 250,000 stadia (instead of the 252,000 actually measured by Eratosthenes), 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 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