"Whereas, 4th, this navigation cannot be effected without the necessary ports are afforded for trade;
"Therefore, be it decreed:
"Art. 1. The Bolivian government declares free to the commerce and mercantile navigation of all the nations of the globe the waters of the navigable rivers which, flowing through the territory of this nation, empty into the Amazon and Paraguay.
"Art. 2. The following are declared free ports, open to the traffic and navigation of all vessels of commerce, whatever may be their flag, destination, or tonnage:
"In the river Mamoré—Exaltacion, Trinidad, and Loreto.
"In the Beni—Renenavaque, Muchanis, and Magdalena.
"In the Piray—Cuatro, Ojos.
"In the Chaparé—Coni and Chimoré, tributaries of the Mamoré, the points of Asunta, Coni, and Chimoré.
"In the rivers Mapiri and Coroico, tributaries of the Beni, the points of Guanay and Coroico.
"In the Pilcomayo—the port of Magriños, on the east coast of the Paraguay, La Bahia Negra, and the point of Borbon.