Tabula Asiae XI

1578

Copper engraving on paper

Print size: 7 x 9.25 in (18 x 23.3 cm)
Sheet size: 8.25 x 12 in (21.2 x 30.4 cm)

Mercator after Ptolemy — Tabula Asiae XI (1578): A Foundational Map of Eastern India and the Origins of Western Mapping of Eastern India

Mercator’s Tabula Asiae XI, engraved after the geographic system of Claudius Ptolemy, represents one of the earliest systematic Western attempts to place Eastern India—particularly the Ganges basin and the Bay of Bengal—within a mathematically ordered global framework. While the geographic content derives from Ptolemy’s second-century Geographia, Mercator’s 1578 copperplate edition marks a decisive Renaissance transformation, converting classical coordinate data into a scientifically engraved atlas map.

In Ptolemaic geography, India Intra Gangem and India Extra Gangem defined the easternmost conceptual frontier of the known world, with the Ganges serving as both a physical and symbolic boundary. Mercator preserves this classical structure while refining it through Renaissance mathematical precision. The Sinus Gangeticus (Bay of Bengal) emerges as a principal maritime theatre, while the speculative Sinus Magnus reflects enduring uncertainties about East and Southeast Asia prior to sustained European exploration.

For the history of Eastern India, this map functions as a conceptual point of origin in Western cartography. It represents the moment when Bengal, the Ganges delta, and the eastern Indian littoral were first systematically incorporated into a global coordinate system. Although Portuguese navigators and traders were already collecting empirical intelligence on Indian Ocean routes in the sixteenth century, Mercator’s Ptolemaic atlas provided the intellectual framework through which later geographic corrections and colonial surveys would be interpreted.

The map also signals a broader epistemic shift. Earlier medieval world maps portrayed Asia through symbolic or theological paradigms; Mercator instead presents Eastern India as a problem of measurement, projection, and scientific ordering. This conceptual transformation underlies the later development of Dutch maritime cartography, British East India Company mapping, and the eighteenth-century scientific surveys of Bengal associated with figures such as James Rennell.

Within an Eastern India-themed auction, Tabula Asiae XI operates as a foundational anchor — the earliest Western cartographic framework upon which all subsequent representations of Bengal and the Bay of Bengal were built. It offers collectors and institutions a rare opportunity to acquire not merely an early map of Eastern India, but a primary document in the intellectual history of how the region first entered Western geographic science.

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