My apology for adding a _postscript_, to a discussion already perhaps too protracted, is the fact that the preceding sheets were in the hands of the printer, and all but the concluding pages had gone through the press, before the passage of Mr. Calhoun's late resolutions in the Senate of the United States. A proceeding so extraordinary,--if indeed henceforward _any_ act of Congress in derogation of freedom and in deference to slavery, can be deemed extraordinary,--should not be passed in silence at such a crisis as the present; especially as the passage of one of the resolutions by a vote of 36 to 9, exhibits a shift of position on the part of the South, as sudden as it is unaccountable, being nothing less than the surrender of a fortress which until then, they had defended with the pertinacity of a blind and almost infuriated fatuity. Upon the discussions during the pendency of the resolutions, and upon the vote, by which they were carried, I make no comment, save only to record my exultation in the fact there exhibited, that great emergencies are _true touchstones_, and that henceforward, until this question is settled, whoever holds a seat in Congress will find upon, and around him, a pressure strong enough to test him--a focal blaze that will find its way through the carefully adjusted cloak of fair pretension, and the sevenfold brass of two faced political intrigue, and _no_-faced _non-committalism_, piercing to the dividing asunder of joints and marrow. Be it known to every northern man who aspires to a seat in our national councils, that hereafter congressional action on this subject will be a MIGHTY REVELATOR--making secret thoughts public property, and proclaiming on the house-tops what is whispered in the ear--smiting off masks, and bursting open sepulchres beautiful outwardly, and up-heaving to the sun their dead men's bones. To such we say,--_Remember the Missouri Question, and the fate of those who then sold the free states and their own birthright!_ Passing by the resolutions generally without remark--the attention of the reader is specially solicited to Mr. Clay's substitute for Mr. Calhoun's fifth resolution. "Resolved, That when the District of Columbia was ceded by the states of Virginia and Maryland to the United States, domestic slavery existed in both of these states, including the ceded territory, and that, as it still continues in both of them, it could not be abolished within the District without a violation of that good faith, which was implied in the cession and in the acceptance of the territory; nor, unless compensation were made to the proprietors of slaves, without a manifest infringement of an amendment to the constitution of the United States; nor without exciting a degree of just alarm and apprehension in the states recognizing slavery, far transcending in mischievous tendency, any possible benefit which could be accomplished by the abolition."