margin of the river, the Governments of both Republics will form an agreement regarding it’s construction, in order that it may serve equally for the use and advantage of both countries.
Article VII.
The river Gila, and the part of the Rio Bravo del Norte lying below the southern boundary of New Mexico, being, agreeably to the fifth Article, divided in the middle between the two Republics, the navigation of the Gila and of the Bravo below said boundary shall be free and common to the veſsels and citizens of both countries; and neither shall, without the consent of the other, construct any work that may impede or interrupt, in whole or in part, the exercise of this right: not even for the purpose of favouring new methods of navigation. Nor shall any tax or contribution, under any denomination or title, be levied upon veſsels or persons navigating the same, or upon merchandise or effects transported thereon, except in the case of landing upon one of their shores. If
