L’immagine cartografica del Portogallo nella prima metà del XIX secolo e la Carta Geographica do Reino del 1865

The purpose of this scientific contribution is to illustrate probably the most important historical period for the Lusitanian cartography, the first half of the 19th century, which marked the definitive transition to a cartographic production based on rigorous scientific methods. It is therefore an era of openness, where the techniques of relief and those of graphical representation were refined, which led the country to finally endow itself with the first Carta Geographica do Reino of 1865, a document entirely produced by Lusitanian cartographers. This contribution consists of three parts. The first concerns a brief analysis of the Lusitanian cartography until the eighteenth century, the second one in particular deals with the cartographic production of the first half of the 19th century until the first Carta Geographica do Reino 1865, and the third part contains the conclusions.