Passing into the service of Uruguay, he was sent to Corrientes with a small flotilla to oppose Rosas's forces, but was overtaken by Admiral Brown, against whose fleet he fought for three days.
The Argentine " mesopotamia," between the Parana and Uruguay rivers, belongs in great measure to this same region, being partly wooded, flat and swampy in the north (Corrientes), but higher and undulating in the south (Entre Rios).
The largest of these are the Corrientes, Feliciano and Gualeguay of the western slope, and the Aguapey and Mirinay of the eastern.
In the northern part of Corrientes there is a large area of swamps and shallow lagoons which are believed to be slowly drying up.
(27,000), Salta (18,000), Corrientes (18,000), Chivilcoy (15,000), Gualeguaychu (13,300), San Nicolas (13,000), Concordia (11,700), San Juan (11,500), Rio Cuarto (10,800), San Luis (10,500), Barracas al Sud (10,200).