The third is that in which we now find ourselves. Various causes, Mr. President, have contributed to produce the existing excitement on the subject of abolition. The principal one, perhaps, is the example of British emancipation of the slaves in the islands adjacent to our country. Such is the similarity in laws, in language, in institutions, and in common origin, between Great Britain and the United States, that no great measure of national policy can be adopted in the one country without producing a considerable degree of influence in the other. Confounding the totally different cases together, of the powers of the British parliament and those of the congress of the United States, and the totally different situations of the British West India islands, and the slaves in the sovereign and independent states of this confederacy, superficial men have inferred, from the undecided British experiment, the practicability of the abolition of slavery in these states. The powers of the British parliament are unlimited, and are often described to be omnipotent. The powers of the American congress, on the contrary, are few, cautiously limited, scrupulously excluding all that are not granted, and, above all, carefully and absolutely excluding all power over the existence or continuance of slavery in the several states. The slaves, too, upon which British legislation operated, were not in the bosom of the kingdom, but in remote and feeble colonies having no voice in parliament. The West India slave-holder was neither represented nor representative in that parliament. And whilst I most fervently wish complete success to the British experiment of West India emancipation, I confess, that I have fearful forebodings of a disastrous termination of it. Whatever it may be, I think it must be admitted, that, if the British parliament treated the West India slaves as freemen, it also treated the West India freemen as slaves. If, instead of these slaves being separated by a wide ocean from the parent country, three or four millions of African negro slaves had been dispersed over England, Scotland, Wales, and Ireland, and their owners had been members of the British parliament—a case which would have presented some analogy to that of our own country—does any one believe that itwould have been expedient or practicable to have emancipated them, leaving them to remain, with all their embittered feelings, in the united kingdom, boundless as the powers of the British parliament are?

Other causes have conspired with the British example to produce the existing excitement from abolition. I say it with profound regret, but with no intention to occasion irritation here or elsewhere, that there are persons in both parts of the union who have sought to mingle abolition with politics, and to array one portion of the union against the other. It is the misfortune in free countries, that, in high party times, a disposition too often prevails to seize hold of every thing which can strengthen the one side or weaken the other. Charges of fostering abolition designs have been heedlessly and unjustly made by one party against the other. Prior to the late election of the present president of the United States, he was charged with being an abolitionist, and abolition designs were imputed to many of his supporters. Much as I was opposed to his election, and am to his administration, I neither shared in making nor believing the truth of the charge. He was scarcely installed in office before the same charge was directed against those who opposed his election.

Mr. President, it is not true, and I rejoice that it is not true, that either of the two great parties in this country has any designs or aim at abolition. I should deeply lament if it were true. I should consider, if it were true, that the danger to the stability of our system would be infinitely greater than any which does, I hope, actually exist. Whilst neither party can be, I think, justly accused of any abolition tendency or purpose, both have profited, and both have been injured, in particular localities, by the accession or abstraction of abolition support. If the account were fairly stated, I believe the party to which I am opposed has profited much more, and been injured much less, than that to which I belong. But I am far, for that reason, from being disposed to accuse our adversaries of being abolitionists.

And now, Mr. President, allow me to consider the several cases, in which the authority of congress is invoked by these abolition petitioners upon the subject of domestic slavery. The first relates to it as it exists in the District of Columbia. The following is the provision of the constitution of the United States in reference to that matter.

‘To exercise exclusive legislation in all cases whatsoever over such district, (not exceeding ten miles square,) as may by cession of particular states, and the acceptance of congress, become the seat of government of the United States.’

This provision preceded, in point of time, the actual cessions which were made by the states of Maryland and Virginia. The object of the cession was, to establish a seat of government of the UnitedStates; and the grant in the constitution, of exclusive legislation, must be understood, and should be always interpreted, as having relation to the object of the cession. It was with a full knowledge of this clause in the constitution, that those two states ceded to the general government the ten miles square, constituting the District of Columbia. In making the cession, they supposed that it was to be applied, and applied solely, to the purposes of a seat of government, for which it was asked. When it was made, slavery existed in both those commonwealths, and in the ceded territory, as it now continues to exist in all of them. Neither Maryland nor Virginia could have anticipated, that, whilst the institution remained within their respective limits, its abolition would be attempted by congress without their consent. Neither of them would probably have made an unconditional cession, if they could have anticipated such a result.

From the nature of the provision in the constitution, and the avowed object of the acquisition of the territory, two duties arise on the part of congress. The first is, to render the district available, comfortable, and convenient, as a seat of government of the whole union; the other is, to govern the people within the district, so as best to promote their happiness and prosperity. These objects are totally distinct in their nature, and, in interpreting and exercising the grant of the power of exclusive legislation, that distinction should be constantly borne in mind. Is it necessary, in order to render this place a comfortable seat of the general government, to abolish slavery within its limits? No one can or will advance such a proposition. The government has remained here near forty years without the slightest inconvenience from the presence of domestic slavery. Is it necessary to the well-being of the people of the district, that slavery should be abolished from amongst them? They not only neither ask nor desire, but are almost unanimously opposed to it. It exists here in the mildest and most mitigated form. In a population of thirty-nine thousand eight hundred and thirty-four, there were, at the last enumeration of the population of the United States, but six thousand one hundred and ten slaves. The number has not probably much increased since. They are dispersed over the ten miles square, engaged in the quiet pursuits of husbandry, or in menial offices in domestic life. If it were necessary to the efficiency of this place as a seat of the general government to abolish slavery, which is utterly denied, the abolition should be confined to the necessity which prompts it, that is, to the limits of the city of Washington itself. Beyond those limits, persons concerned in the government of the United States have no more to do with the inhabitants of the district than they have with the inhabitants of the adjacent counties of Maryland and Virginia, which lie beyond the district.

To abolish slavery within the District of Columbia, whilst itremains in Virginia and Maryland, situated, as that district is, within the very heart of those states, would expose them to great practical inconvenience and annoyance. The district would become a place of refuge and escape for fugitive slaves from the two states, and a place from which a spirit of discontent, insubordination, and insurrection, might be fostered and encouraged in the two states. Suppose, as was at one time under consideration, Pennsylvania had granted ten miles square within its limits for the purpose of a seat of the general government; could congress, without a violation of good faith, have introduced and established slavery within the bosom of that commonwealth, in the ceded territory, after she had abolished it so long ago as the year 1780? Yet the inconvenience to Pennsylvania in the case supposed would have been much less than that to Virginia and Maryland in the case we are arguing.

It was upon this view of the subject, that the senate, at its last session, solemnly declared that it would be a violation of implied faith, resulting from the transaction of the cession, to abolish slavery within the District of Columbia. And would it not be? By implied faith is meant, that when a grant is made for one avowed and declared purpose, known to the parties, the grant should not be perverted to another purpose, unavowed, and undeclared, and injurious to the grantor. The grant, in the case we are considering, of the territory of Columbia, was for a seat of government. Whatever power is necessary to accomplish that object is carried along by the grant. But the abolition of slavery is not necessary to the enjoyment of this site as a seat of the general government. The grant in the constitution, of exclusive power of legislation over the district, was made to insure the exercise of an exclusive authority of the general government, to render this place a safe and secure seat of government, and to promote the well-being of the inhabitants of the district. The power granted ought to be interpreted and exercised solely to the end for which it was granted. The language of the grant was necessarily broad, comprehensive, and exclusive, because all the exigencies which might arise to render this a secure seat of the general government could not have been foreseen and provided for. The language may possibly be sufficiently comprehensive to include a power of abolition, but it would not at all thence follow, that the power could be rightfully exercised. The case may be resembled to that of a plenipotentiary invested with a plenary power, but who, at the same time, has positive instructions from his government as to the kind of treaty which he is to negotiate and conclude. If he violates those instructions, and concludes a different treaty, this government is not bound by it. And if the foreign government is aware of the violation, it acts in bad faith. Or it may be illustrated by an example drawn from private life. I am an endorser for my friend on a note discounted in bank. He applies to me to endorse another to renew it, which I do in blank.Now, this gives him power to make any other use of my note which he pleases. But if, instead of applying it to the intended purpose, he goes to a broker and sells it, thereby doubling my responsibility for him, he commits a breach of trust, and a violation of the good faith implied in the whole transaction.

But, Mr. President, if this reasoning were as erroneous as I believe it to be correct and conclusive, is the affair of the liberation of six thousand negro slaves in this district, disconnected with the three millions of slaves in the United States, of sufficient magnitude to agitate, distract, and embitter this great confederacy?