In one respect it goes further than any of its successors, because it not only guarantees the neutrality of the route itself, but "the rights of sovereignty and property" of New Granada over the entire Province of Panama. It is worthy of remark that when it was sent to the Senate it was accompanied by a message of President Polk, dated February 10, 1847, in which the attention of that body was especially called to these important stipulations of the thirty-fifth article, and in which it was stated, moreover, that our chargé d'affaires who negotiated the treaty "acted in this particular upon his own responsibility and without instructions." Under these circumstances the treaty was approved by the Senate and the transit policy to which I have referred was deliberately adopted. A copy of the executive document (confidential), Twenty-ninth Congress, second session, containing this message of President Polk and the papers which accompanied it is hereto annexed. The next in order of time of these treaties of transit and guaranty is that of the 19th April, 1850, with Great Britain, commonly called the Clayton and Bulwer treaty. This treaty, in affirmance of the policy of the New Granada treaty, established a general principle which has ever since, I believe, guided the proceedings of both Governments. The eighth article of that treaty contains the following stipulations: The Government of the United States having not only desired in entering into this convention to accomplish a particular object, but also to establish a general principle, they hereby agree to extend their protection by treaty stipulations to any other practicable communications, whether by canal or railway, across the isthmus which connects North and South America, and especially to the interoceanic communications, should the same prove to be practicable, whether by canal or railway, which are now proposed to be established by the way of Tehuantepec or Panama. And that the said-- Canals or railways shall also be open on like terms to the citizens and subjects of every other state which is willing to grant thereto such protection as the United States and Great Britain propose to afford. The United States, in a short time after the Clayton and Bulwer treaty was concluded, carried this stipulation in regard to the Tehuantepec route into effect by their treaty with Mexico of the 30th December, 1853. The eighth article of this treaty, after granting to us the transit privileges therein mentioned, stipulates that "the Mexican Government having agreed to protect with its whole power the prosecution, preservation, and security of the work, the United States may extend its protection as it shall judge wise, to use it when it may feel sanctioned and warranted by the public or international law."