We know less of Mr. Garrison than of either of the other gentlemen. He heads the extreme wing of the Socialist, Infidel, Woman's-Right, Agrarian and Abolition party, who are called Garrisonians. He edits the Liberator, which is conducted with an ability worthy of a better cause. He and his followers seem to admit that the Bible and the Constitution recognize and guarantee Slavery, and therefore denounce both, and propose disunion and no priests or churches, as measures to attain abolition. Mr. Garrison usually presides at their meetings, and we infer, in part, their principles and doctrines, from the materials that compose those meetings. A Wise-Woman will rise and utter a philipic against Marriage, the Bible, and the Constitution,--and will be followed by negro Remond, who "spits upon Washington," and complains of the invidious distinction of calling whites Anglo-Saxons, and negroes Africans. And now, Phillips arises, "Armed with hell-flames and fury," and gently begins, in tones more dulcet, and with action more graceful than Belial, to "Pour the sweet milk of concord into hell! Uproar the universal peace-- Destroy all unity on earth." Then Mr. Parker will edify the meeting by stirring up to bloody deeds in Kansas or in Boston--in which, as becomes his cloth, he takes no part--and ends by denouncing things in general, and the churches and parsons in particular. And, probably, the whole will conclude with a general indulgence and remission of sins, from Mr. Andrews, who assumes, for the nonce, the character of Father Confessor, and assures the tender conscience that it is right and incumbent to take the oath to sustain the Constitution, with the deliberate purpose of violating it, because such oaths are taken under moral duress. These Garrisonians are as intellectual men as any in the nation. They lead the Black Republican party, and control the politicians. Yet are they deadly enemies of Northern as well as of Southern institutions.