Map in Which the Rivers on Argentina, Parana and Paraguay are Described Most Exactly for the First Time, When a Beginning was Made by the New Colony as Far as the Mouth of the Jauru River


This atlas of colonial South America is by Miguel Antonio Ciera. A noted mathematician and professor of astronomy at the University of Coimbra in Portugal, Ciera was part of an expedition sent to demarcate the border between Spanish and Portuguese holdings in South America following signature of the 1750 Treaty of Madrid and the 1756 Guarani War. The atlas focuses on the southern part of the continent, in the watershed of the Paraná River, where the borders were most disputed. The territory in the atlas includes present-day Argentina and Paraguay, as well as part of southwestern Brazil. In addition to the maps, the atlas contains colorful pictures of local birds and scenes from nature.

Date Created

Subject Date

Title in Original Language

Mappa geographicum quo flumen Argenteum, Paraná et Paraguay exactissime nunc primum describuntur, facto initio a nova Colonia ad ostium usque fluminis Iauru

Type of Item

Physical Description

1 atlas manuscript (35 folios), color drawing in ink; 37 x 28 centimeters

Last updated: January 8, 2018