APPENDICES. 
A. 
Article V. of the Treaty of Guadalupe Hidalgo, relating to the 
Boundary between the United States and Mexico. 
“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 west- 
wardly along the whole southern boundary of New Mexico (which runs 
north of the town called Paso) to its western termination ; thence north- 
ward, along the western line of New Mexico, until it intersects the first 
branch of the river Gila (or if it should not intersect any branch of 
that river, then to the point on the said line nearest to such branch, and 
thence in a direct line to the same); thence down the middle of the 
said branch and of the 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 the 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 the limit separating Upper from 
Lower California, it is agreed that the said limit shall consist of a 
