This was intended to stop the misrepresentations which were circulated, and to correct the errors of the government in relation to Great Britain and Texas. It was a reiteration, and that for the third time, and voluntarily, of denial of all the alarming designs attributed to Great Britain, and by means of which a Texas agitation was getting up in the United States. Besides the full declaration made to our federal government, as head of the Union, a special assurance was given to the slaveholding States, to quiet their apprehensions, the truth and sufficiency of which must be admitted by every person who cannot furnish proof to the contrary. I read this special assurance a second time, that its importance may be more distinctly and deeply felt by every senator:

"And the governments of the slaveholding States may be assured, that, although we shall not desist from those open and honest efforts which we have constantly made for procuring the abolition of slavery throughout the world, we shall neither openly nor secretly resort to any measures which can tend to disturb their internal tranquillity, or thereby to affect the prosperity of the American Union."

It was on the 26th day of February that this noble despatch was communicated to the (then) American Secretary of State. That gentleman lost his life by an awful catastrophe on the 28th, and it seems to be understood, and admitted all around, that the treaty of annexation was agreed upon, and virtually concluded before his death. Nothing, then, in Lord Aberdeen's declaration, could have had any effect upon its formation or conclusion. Yet, six days after the actual signature of the treaty by the present Secretary of State—namely, on the 18th day of April—this identical despatch of Lord Aberdeen is seized upon, in a letter to Mr. Pakenham, to justify the formation of the treaty, and to prove the necessity for the immediate annexation of Texas to the United States, as a measure of self-defence, and as the only means of saving our Union! Listen to the two or three first paragraphs of that letter: it is the long one filled with those negro statistics of which Mr. Pakenham declines the controversy. The secretary says:

(Here the paragraphs were read, and the Senate heard with as much amazement as Mr. Pakenham could have done, that comparative statement of the lame, blind, halt, idiotic, pauper and jail tenants of the free and the slave blacks, which the letter to the British minister contained, with a view to prove that slavery was their best condition.)

It is evident, Mr. President, that the treaty was commenced, carried on, formed, and agreed upon, so far as the documents show its origin, in virtue of the information given in the private letter of Mr. Duff Green, contradicted as that was by the Texian and British ministers, to whom it referred. It is evident from all the papers that this was the case. The attempt to find in Lord Aberdeen's letter a subsequent pretext for what had previously been done, is evidently an afterthought, put to paper, for the first time, just six days after the treaty had been signed! The treaty was signed on the 12th of April: the afterthought was committed to paper, in the form of a letter to Mr. Pakenham, on the 18th! and on the 19th the treaty was sent to the Senate! having been delayed seven days to admit of drawing up, and sending in along with it, this ex post facto discovery of reasons to justify it. The letter of Mr. Calhoun was sent in with the treaty: the reply of Mr. Pakenham to it, though brief and prompt, being written on the same day (the 19th of April), was not received by the Senate until ten days thereafter—to wit: on the 29th of April; and when received, it turns out to be a fourth disavowal, in the most clear and unequivocal terms, of this new discovery of the old designs imputed to Great Britain, and which had been three times disavowed before. Here is the letter of Mr. Pakenham, giving this fourth contradiction to the old story, and appealing to the judgment of the civilized world for its opinion on the whole transaction. I read an extract from this letter; the last one, it is presumed, that Mr. Pakenham can write till he hears from his government, to which he had immediately transmitted Mr. Calhoun's ex post facto letter of the 18th.

(It was read.)

Now what will the civilized world, to whose good opinion we must all look: what will Christendom, now so averse to war, and pretexted war: what will the laws of reason and honor, so just in their application to the conduct of nations and individuals: what will this civilized world, this Christian world, these just laws—what will they all say that our government ought to have done, under this accumulation of peremptory denials of all the causes which we had undertaken to find in the conduct of Great Britain for our "immediate" annexation of Texas, and war with Mexico? Surely these tribunals will say: First, That the disavowals should have been received as sufficient; or Secondly, They should be disproved, if not admitted to be true; or Thirdly, That reasonable time should be allowed for looking further into their truth.

One of these things should have been done: our President does neither. He concludes the treaty—retains it a week—sends it to the Senate—and his Secretary of State obtains a promise from the chairman of the Committee on Foreign Relations [Mr. Archer] to delay all action upon it—not to take it up for forty days—the exact time that would cover the sitting of the Baltimore democratic convention for the nomination of presidential candidates! This promise was obtained under the assurance that a special messenger had been despatched to Mexico for her consent to the treaty; and the forty days was the time claimed for the execution of his errand, and at the end of which he was expected to return with the required consent. Bad luck again! This despatch of the messenger, and delay for his return, and the reasons he was understood to be able to have offered for the consent of Mexico, were felt by all as an admission that the consent of Mexico must be obtained, cost what millions it might. This admission was fatal! and it became necessary to take another tack, and do it away! This was attempted in a subsequent message of the President, admitting, to be sure, that the messenger was sent, and sent to operate upon Mexico in relation to the treaty; but taking a fine distinction between obtaining her consent to it, and preventing her from being angry at it! This message will receive justice at the hands of others; I only heard it as read, and cannot quote it in its own words. But the substance of it was, that the messenger was sent to prevent Mexico from going to war with us on account of the treaty! as if there was any difference between getting her to consent to the treaty, and getting her not to dissent! But, here again, more bad luck. Besides the declarations of the chairman of Foreign Relations, showing what this messenger was sent for, there is a copy of the letter furnished to us of which he was the bearer, and which shows that the "concurrence" of Mexico was wanted, and that apologies are offered for not obtaining her "previous consent." But, of this hereafter. I go on with the current of events. The treaty was sent in, and forty days' silence upon it was demanded of the Senate. Now why send it in, if the Senate was not to touch it for forty days? Why not retain it in the Department of State until the lapse of these forty days, when the answer from Mexico would have been received, and a fifth disavowal arrived from Great Britain! if, indeed, it is possible for her to reiterate a disavowal already four times made, and not received? Why not retain the treaty during these forty days of required silence upon it in the Senate, and when that precious time might have been turned to such valuable account in interchanging friendly explanations with Great Britain and Mexico? Why not keep the treaty in the Secretary of State's office, as well as in the Secretary of the Senate's office, during these forty days? Precisely because the Baltimore convention was to sit in thirty-eight days from that time! and forty days would give time for the "Texas bomb" to burst and scatter its fragments all over the Union, blowing up candidates for the presidency, blowing up the tongue-tied Senate itself for not ratifying the treaty, and furnishing a new Texas candidate, anointed with gunpowder, for the presidential chair. This was the reason, and as obvious as if written at the head of every public document. In the mean time, all these movements give fresh reason for an examination of persons at the bar of the Senate. The determination of the President to conclude the treaty, before the Earl of Aberdeen's despatch was known to him—that is to say, before the 26th of February, 1844: the true nature of the messenger's errand to Mexico, and many other points, now involved in obscurity, may be cleared up in these examinations, to the benefit and well being of the Union. Perhaps it may chance to turn out in proof, that the secretary, who found his reasons for making the treaty and hastening the immediate annexation, had determined upon all that long before he heard of Lord Aberdeen's letter.

But to go on. Instead of admitting, disproving, or taking time to consider the reiterated disavowals of the British government, the messenger to Mexico is charged with our manifesto of war against that government, on account of the imputed designs of Great Britain, and in which they are all assumed to be true! and not only true, but fraught with such sudden, irresistible, and irretrievable ruin to the United States, that there was no time for an instant of delay, nor any way to save the Union from destruction but by the "immediate" annexation of Texas. Here is the letter. It is too important to be abridged; and though referred to several times, will now be read in full. Hear it:

(The letter read.)