OF THE RIVERS PARAGUAY, PARANA, AND URUGUAY.
Importance of the rivers of the United Provinces. The
Paraguay and its tributaries. The Pilcomayo. The Vermejo.
Soria's expedition down it from Oran, proving it navigable
thence to Assumption. Periodical inundations of the
Paranã, similar to those of the Nile. The Uruguay and
its affluents. Surveys by the Commissioners appointed to
determine the Boundaries laid down by the Treaty between
Spain and Portugal of 1777. Original Maps obtained Page 179