de or Rio Bravo. This fact is established by the authority of our
most eminent statesmen at a period when the question was as well, if not
better, understood than it is at present. During Mr. Jefferson's
Administration Messrs. Monroe and Pinckney, who had been sent on a
special mission to Madrid, charged among other things with the
adjustment of boundary between the two countries, in a note addressed to
the Spanish minister of foreign affairs under date of the 28th of
January, 1805, assert that the boundaries of Louisiana, as ceded to the
United States by France, "are the river Perdido on the east and the
river Bravo on the west," and they add that "the facts and principles
which justify this conclusion are so satisfactory to our Government as
to convince it that the United States have not a better right to the
island of New Orleans under the cession referred to than they have to
the whole district of territory which is above described." Down to the
conclusion of the Florida treaty, in February, 1819, by which this
territory was ceded to Spain, the United States asserted and maintained
their territorial rights to this extent. In the month of June, 1818,
during Mr. Monroe's Administration, information having been received
that a number of foreign adventurers had landed at Galveston with the
avowed purpose of forming a settlement in that vicinity, a special
messenger was dispatched by the Government of the United States with
instructions from the Secretary of State to warn them to desist, should
they be found there, "or any other place north of the Rio Bravo, and
within the territory claimed by the United States." He was instructed,
should they be found in the country north of that river, to make known
to them "the surprise with which the President has seen possession thus
taken, without authority from the United States, of a place within their
territorial limits, and upon which no lawful settlement can be made
without their sanction." He was instructed to call upon them to "avow
under what national authority they profess to act," and to give them due
warning "that the place is within the United States, who will suffer no
permanent settlement to be made there under any authority other than
their own." As late as the 8th of July, 1842, the Secretary of State of
the United States, in a note addressed to our minister in Mexico,
maintains that by the Florida treaty of 1819 the territory as far west
as the Rio Grande was confirm