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Detailed regional map of the Italy and the Adriatic, from Nicolosi's landmark atlas, a state sponsored work published in response to the work of Sanson and others outside of Italy.

Nicolosi's unusual 4 sheet continental maps are unique in their presentation and style. The maps were the result of meticulous compilations by Nicolosi. This sheet is superimposed over a portion of Scandinavia from the main four sheet map, but is a fine stand alone example of Nicolosi's work. Nicolosi's Dell' Hercole e studio geografico is one of the most important Italian Atlases of the 17th Century and incorporates Nicolosi's fine work. Nicolosi maps rarely appear on the market. An essential collector's map of the region.

Giovanni Battista Nicolosi Biography

Giovanni Battista Nicolosi (1610-1670), also known as Giovan Battista, was a Sicilian priest, geographer and cartographer, who worked for the Vatican's Congregation for the Evangelization of Peoples (or Propaganda Fide) under Pope Gregory XV. Officially, the Fide office was established to promote missionary work across the globe, but the reality was that it constituted an important office for the maintenance and dilation of the Church’s power in an ever-expanding world.

Arriving in the papal capital around 1640, Nicolosi devoted himself to the study of letters, sciences, geography and languages. In 1642, he published his Theory of the Terrestrial Globe, a small treatise on mathematical geography, and, a few years later, his guide to geographic study, which was a short treatise on cosmography and cartography. Both works reflected a Ptolemaic world view, but his guide to geographic study would soon serve as an introduction to Nicolosi’s real magnum opus, Dell' Ercole e Studio Geografico, which was first published in 1660. His Theory of the Terrestrial Globe, on the other hand, brought Nicolosi to the attention of broader scientific circles and earned him the Chair in Geography at the University of Rome.

In late 1645, Nicolosi travelled to Germany at the invitation of Ferdinand Maximilian of Baden-Baden, where he remained for several years until returning to Rome. Here, Nicolosi was appointed chaplain of the Borghesiana in the Basilica of Santa Maria Maggiore. This honor was conferred on him by Prince Giovanni Battista Borghese, who Nicolosi himself had tutored and in whose palace he had lived since 1651. Years later, Nicolosi would thank the prince for his generosity by dedicating his most seminal work to him.

One of Nicolosi's most significant contributions to the history of science and geography is the so-called map of the world on a globular projection.  First published in 1660, Nicolosi's map of the world, produced ny the Vatican, constituted a pioneering innovation in the way in which the physical world was portrayed. This entirely new perspective on geography was groundbreaking and quickly adapted across the cartographic plane. It has consequently come to be known as the ‘Nicolosi projection’. In truth, Nicolosi's globular projection is a polyconic map projection invented by Abū Rayḥān Muḥammad ibn Aḥmad Al-Bīrūnī, the foremost Muslim scholar of the Islamic Golden Age, who invented the first recorded globular projection for use in celestial maps about the year 1000 CE. Nicolosi was almost certainly not awared of the work of Al-Bīrūnī, and Nicolosi's name it typically attributed to the projection.

There exists in the Vatican and other National archives a considerable collection of Nicolosi’s unpublished work. This includes a large chorographic (i.e. descriptive) map of all of Christendom, commissioned by Pope Alexander VII, as well as a full geographic description and map of the Kingdom of Naples, which was sent to Habsburg Emperor Leopold I in 1654.