Copperplate engraving, 580x880 mm, beautifully period-painted with some gold embossing. Slightly browned and with small defects to the spine. Beautiful large-format map of South America, based on earlier maps by Nicolas Sanson, included in Jaillot's "Atlas nouveau". The Rio de la Plata curves northwards, dotted with islands, and ends in the mythical Lake Xarayes. The Amazon River winds towards the heart of the mainland, intertwining with smaller rivers in Peru. To the north is a large rectangular lake, Lake Parime, on whose banks lies the mystical city of Manoa El Dorado. In the far south, the Strait of Magellan separates Tierra del Fuego from the mainland. The latter is depicted as a single island with several rivers, a common representation of the area at the time. The Straits are surrounded by place names of Spanish, Dutch and English origin. This reflects the dense history of navigation in the area: Magellan, a Portuguese sailor in the employ of the Spanish, named Cape of the 11,000 Virgins, Jacob Le Maire named Staten Land and the Straits of Le Maire, and John Narbrough named Cape Froward, as a few examples. The geographical content of the map is enriched by decorative elements. In the bottom right-hand corner is a mile scale with figures of natives. Below them, a monkey and some tropical birds. In the bottom left-hand corner is the title cartouche crowned by two indigenous men in robes. Below them, a monkey and some tropical birds. At the bottom left is the title cartouche crowned by two impressively dressed native men facing the coat of arms of the Dauphin of France, dedicatee of the map.Jaillot's map is one of the most detailed and accurate of its time