In the mean while, during the past year, the Republican Administration, with all the unwonted care of organizing an army and navy, and conducting military operations on an immense scale, have proceeded to demonstrate the feasibility of overthrowing slavery by purely Constitutional measures.  To this end they have instituted a series of movements which have made this year more fruitful in anti-slavery triumphs than any other since the emancipation of the British West Indies.

The District of Columbia, as belonging strictly to the National Government, and to no separate State, has furnished a fruitful subject of remonstrance from British Christians with America.  We have abolished slavery there, and thus wiped out the only blot of territorial responsibility on our escutcheon.

By another act, equally grand principle, and far more important in its results, slavery is forever excluded from the Territories of the United States.

By another act, America has consummated the long-delayed treaty with Great Britain for the suppression of the slave-trade.  In ports whence slave-vessels formerly sailed with the connivance of the port-officers, the Administration has placed men who stand up to their duty, and for the first time in our history the slave-trader, is convicted and hung as a pirate.  This abominable secret traffic has been wholly demolished by the energy of the Federal Government.

Lastly, and more significant still, the United States Government has in its highest official capacity taken distinct anti-slavery ground, and presented to the country a plan of peaceable emancipation with suitable compensation.  This noble-spirited and generous offer has been urged on the Slaveholding States by the Chief Executive with an earnestness and sincerity of which history in after-times will make honorable account in recording the events of Mr. Lincoln’s administration.

Now, when a President and Administration who have done all these things declare their intention of restoring “the Union as it was,” ought not the world fairly to interpret their words by their actions and their avowed principles?  Is it not necessary to infer that they mean by it the Union as it was in the intent of its anti-slavery framers, under which, by the exercise of normal Constitutional powers, slavery should be peaceably abolished?

We are aware that this theory of the Constitution has been disputed by certain Abolitionists; but it is conceded, you have seen, by the Secessionists.  Whether it be a just theory or not is, however, nothing to our purpose at present.  We only assert that such is the professed belief of the present Administration of the United States, and such are the acts by which they have illustrated their belief.

But this is but half the story of the anti-slavery triumphs of this year.  We have shown you what has been done for freedom by the simple use of the ordinary Constitutional forces of the Union.  We are now to show you what has been done to the same end by the Constitutional war-power of the nation.