The agitation and outside pressure which they were chiefly instrumental in furthering to its rightful issues, were the most powerful auxiliaries, if not the power itself, which emancipated the mind of the country from its subserviency to the slave dominion. They were the creators of the sentiment that freed the negro at last from his bonds and cleared the way for a true Republican State. Some power superior to the Constitution was required to revise it, and free the whole people from this Arachne's coil that had bound them so long; was especially needed to extricate the rulers themselves from its meshes, and to rescue the rights thus imperilled by unscrupulous placemen who shrunk from the task. These could not help them, caught in the same snare that bound the nation. "Neither the law, nor the Constitution, nor the whole system of American institutions," they were told, "ever had contemplated a case as likely to arise under our system in which a resort would be necessary to provide outside of the law and Constitution for amending the Constitution." The case arose, nevertheless, and was provided for by these powerful agitators, and by the progress of events. The late civil outbreak compelled the necessary amendments, sweeping the compromises, the slave Congress and territory from the statute books and the country itself. "Principles like fountains flow round forever, Being in a state of perpetual agitation." "To all new truths, all renovations of old truths," says Coleridge, "it must be as in the ark between the destroyed and the about-to-be-renovated world. The raven must be sent out before the dove, and ominous controversy must precede peace and the olive wreath." GREELEY. Of political editors, next to Garrison, perhaps Horace Greeley was the most efficient in furthering this national result; and by his eminent services in various departments of activity comes nearest to being the people's man, the best representative of character indigenous to New England, or more properly America--like Beecher and Phillips. His power appears to lie in his strong understanding, abundant information, plain statement of his facts, freed from all rhetorical embellishment. A rustic Franklin in his direct way of putting his things before his auditor, he makes plain his meaning in spite of his utter want of all graces of person, or of oratory, handling his subject as a rude farmer his axe and crowbar. There is about him a homely charm of good-nature, a child-like candor, that have all the effect of eloquence, elevating him for the time into the subject he treats. In the statistics of things, practical and political, he is a kind of living encyclopedia of information, and as his chief distinction has made the newspaper a power it had not been before. May we not credit New England with giving the country these new Instrumentalities for Progress, viz.:--