"Art. IV. Immediately after the ratifications of the present treaty all castles, forts, territories, places, and possessions shall be definitely restored to Mexico; the final evacuation of the territory of Mexico shall be completed within three months, or sooner if possible, the Mexican Government engaging to use all means in its power to facilitate the same. All prisoners of war taken on sea or land to be restored, and all Mexicans held by savage tribes within the United States to be exacted from such tribes and restored to their country.
"Art. V is given in full:
"The boundary line between the two republics shall commence in the Gulf of Mexico, three leagues from land, opposite the mouth of the Rio Grande, otherwise called Rio Bravo del Norte, or opposite the mouth of its deepest branch, if it should have more than one branch emptying directly into the sea; from thence up the middle of that river, following the deepest channel, where it has more than one, to the point where it strikes the southern boundary of New Mexico; thence westwardly along the southern boundary of New Mexico (which runs north of the town called Paso) to its western termination; thence northward along the western line of New Mexico until it intersects the first branch of the Rio Gila (or if it should not intersect any branch of that river, then to a point on said line nearest to said branch, and thence in a direct line to the same); thence down the middle of the said branch of said river until it empties into the Rio Colorado; thence across the Rio Colorado, following the division line between Upper and Lower California to the Pacific Ocean. The southern and western limits of New Mexico mentioned in this article are those laid down in the map entitled 'Map of the United Mexican States, as organized and defined by various acts of Congress of said republic, and constructed according to the best authorities. Revised edition. Published in New York, in 1847, by J. Disturnell'; of which map a copy is added to this treaty, bearing the signatures and seals of the undersigned plenipotentiaries. And in order to preclude all difficulty in tracing upon the ground limit separating Upper from Lower California, it is agreed that the said limit shall consist of a straight line drawn from the middle of the Rio Gila, where it unites with the Colorado, to a point on the coast of the Pacific Ocean distant one marine league due south of the southernmost point of the port of San Diego, according to the plan of said port made in 1782 by Don Juan Pantoja, second sailing master of the Spanish fleet, and published at Madrid in the year 1802, in the atlas to the voyage of said schooners Sutil and Mexicana; of which plan a copy is hereunto added, signed and sealed by the respective plenipotentiaries.
"In order to designate the boundary line with due precision upon authoritative maps, and to establish upon the ground landmarks which shall show 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 themselves citizens of Mexico shall be incorporated in and become citizens of the United States under such regulations as shall be provided by law.
"Art. 10 of the treaty was stricken out.