ow the limits of both republics, as described in the present
article, the two governments shall each appoint a commissioner and
surveyor, who, before the expiration of one year from the date of
the exchange of ratifications of this treaty, shall meet at the port
of San Diego and proceed to run and mark the said boundary in its
whole course to the mouth of the Rio Bravo del Norte. They shall
keep journals and make out plans of their operations; and the result
agreed upon by them shall be deemed a part of this treaty, and shall
have the same force and effect as if inserted therein. The two
governments will amicably agree regarding what may be necessary to
these persons, and also as to their respective escorts, should such
be necessary.

"The boundary line established by this article shall be religiously
respected by each of the two republics, and no change shall ever be
made therein, except by the express and free consent of both nations
lawfully given by the General Government of each in conformity with
its own constitution.

"ART. 6 gives citizens of the United States free navigation
of the Gulf of California and the Rio Colorado below its confluence
with the Gila.

"ART. 7. The Rio Gila and the part of the Rio Bravo del
Norte are made free for the navigation of vessels of both countries
without tax.

"ART. 8. Mexicans to remain in the ceded territory if they
choose to do so, or to remove at any time to the Mexican republic,
retaining the property they possess in said territories, or
disposing of the same and removing the same wherever they please.
Those who remain in said territories may either retain the title and
rights of Mexican citizens or acquire those of citizens of the
United States; but they shall be under the obligation to make their
election within one year from the date of the exchange of
ratifications of this treaty; and those who shall remain in said
territories after the expiration of that year, without having
declared their intention to retain the character of Mexicans, shall
be considered to have elected to become citizens of the United
States. Property in those territories belonging to Mexicans shall be
inviolably respected, and the present owners and their heirs and
those who have acquired the same shall enjoy the same, as if it
belonged to citizens of the United States.

"ART. 9. Mexicans who do not declare themselv