But we see little to apprehend from this source of danger. If the slave-holding interest would be rendered really more secure by separation or secession, then, indeed, such a result might be looked for with some degree of confidence. But it is very certain that the measure would lead to an escape of most of the slaves near the northern frontiers of the Southern Confederacy, as well as of a vast number of those who live at a greater distance from what would probably be the dividing line. The North has been aroused to the necessity of being just, and of adhering to the conditions of the Constitution; and the recent measures of the country go to prove there is no real disposition, in the masses, to do otherwise. The attachment to the Union is very strong and general throughout the whole of this vast country, and it is only necessary to sound the tocsin to bring to its maintenance a phalanx equal to uphold its standard against the assaults of any enemies. The impossibility of the North-western States consenting that the mouth of the Mississippi should be held by a foreign power, is in itself a guaranty of the long existence of the present political ties. Then, the increasing and overshadowing power of the nation is of a character so vast, so exciting, so attractive, so well adapted to carry with it popular impulses, that men become proud of the name of American, and feel unwilling to throw away the distinction for any of the minor considerations of local policy. Every man sees and feels that a state is rapidly advancing to maturity which must reduce the pretensions of even ancient Rome to supremacy, to a secondary place in the estimation of mankind. A century will unquestionably place the United States of America prominently at the head of civilized nations, unless their people throw away their advantages by their own mistakes--the only real danger they have to apprehend: and the mind clings to this hope with a buoyancy and fondness that are becoming profoundly national. We have a thousand weaknesses, and make many blunders, beyond a doubt, as a people; but where shall we turn to find a parallel to our progress, our energy, and increasing power? That which it has required centuries, in other regions, to effect, is here accomplished in a single life; and the student in history finds the results of all his studies crowded as it might be into the incidents of the day.