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Fascinating 16th Century map of the world, which appeared in Magini's edition of Ptolemy's Geographia.

Magini's mariner's map follows Gerard Mercator's large world map of 1569 on a reduced scale, with the fanciful addition of a mountain range in the Southern Continent.

The map clearly shows a northwest passage. No Great Lakes are shown and California is not yet an Island. Interesting early projections of both North and South America, with Quivera and the Straits of Anian named, along with Florida and Norobega. Several mythical Islands, including Frieslandt and Irlant are shown. The accompanying text refers to the navigational textbooks of Pietro Nonio and inlcudes instructions to help sailors navigate from place to place.

Giovanni Antonio Magini Biography

Giovanni Antonio Magini was an accomplished Italian cartographer, astronomer, astrologer, and mathematician—in short, a Renaissance man. Born in Padua, he studied philosophy in Bologna. His first publication was Ephemerides coelestium motuum, an astronomical treatise published in 1582. In 1588 he was selected, over Galileo Galilei, to fill the chair of mathematics at the University of Bologna. He died in that city in 1617.

Magini operated under a geocentric understanding of the universe and created his own planetary theory consisting of eleven rotating spheres. He published this theory in Novæ cœlestium orbium theoricæ congruentes cum observationibus N. Copernici (Venice, 1589). In the 1590s he published works on surveying and trigonometry, as well as invented a calculator. In 1596, he published a commentary of Ptolemy’s Geographia, which was published in several editions and languages. He labored for years on an atlas of Italy, which was printed posthumously in 1620. To pay for this project, Magini served as the math tutor to the son of the Duke of Mantua, as well as being the court astrologer to the Duke.