Gosselin M.: “Geographie des Grecs analysee ou les systems d Eratosthenes ,de Strabon et de Ptolemee compares entre eux et avec noc connaissances moderns “.Paris 1790 First and only edition. Folio 30x22cm,contemporary full leather richly gilt, marbled edges ,brilliant interior, complete [4]148p.,8 tables,27p.,[2] and the 10 big folded maps as called for ,corners of spine slightly cheeped, otherwise an almost mint copy with a fine binding. This scientific study of the Enlightenment Age is the first comparative analysis of the geographical material provided by the Ancient Greeks geographers compared with the contemporary, 18th century, Geographical knowledge. .Strabo, Eratosthenes and Ptolemy s geographies have been analyzed ,their descriptions compared with the astronomical and other measurements available in 1790 and the positions of antique places and cities tried to be fixed ,in a time that archaeological excavations could not be of help for the identification of ancient places .It is a splendid scientific achievement, as ancient travelers reports were still a basic help even for modern contemporary maps .Many tables of concrete measurements provided .Very richly illustrated with 10 copper engraved folded maps. An impressive work. All this kind of scientific works had a very limited print run that time, for this one it was 200 copies, according the relevant data. It had not appeared at least the last 20 years. Extremely Rare work on ancient Greek geographers.