North of Buenos Aires, on the Parana river, is the port of Rosario, the outlet for a rich agricultural district, ranking next to the federal capital in importance.
The names, area and population of the provinces and territories are as follows: The principal towns, with estimated population for 1905, are as follows: Buenos Aires (1,025,653), Rosario (129,121), La Plata (85,000), Tucuman (55,000), Cordoba (43,000), Sante Fe (33, 200), Mendoza (32,000), Parana.
The principal centres of the system are Buenos Aires, Rosario and Bahia Blanca, with La Plata as a secondary centre to the former, and from these the lines radiate westward and northward.
Those of Buenos Aires, Rosario and La Plata are owned by public companies.
To meet the needs of technical and industrial education there are a school of mines at San Juan, a school of viticulture at Mendoza, an agronomic and veterinary school at La Plata, several agricultural and pastoral schools, and commercial schools in Buenos Aires, Rosario, Bahia Blanca and Concordia.