Senator Green, of Missouri, was justly regarded as one of the clearest thinkers and speakers in the Upper House. Irregularity of life had somewhat blunted what must once have been a very superior mind. His statesmanship was of a high order; his oratory ingenuous, generally courteous and conciliatory, and always entertaining, from its lucidness and keenness. He was decidedly popular in social circles, genial and good-natured, and full of animal spirits. His excesses, indeed, rather tended to make him the more companionable, though they undoubtedly undermined an uncommonly fine intellect; and certainly nothing can be more sickening than to see one so highly endowed, and who might command the applause of listening senates, gradually sinking below the level of manhood by habitual indulgences. In personal appearance, he was rather awkward, of an ungainly figure, his countenance not highly intelligent, but cheerful and rather pleasing. After the ostracism of the great bulwark of Democracy, Douglas, from the councils of his party, Senator Green became the leader of that side of the house, assuming the place on the Committee on Territories made vacant by the Illinois statesman. As a manager of party tactics, and as a bold, shrewd, and energetic leader, few could equal and none surpass him. His rise to so high a consideration among his political friends was rapid, but proved, in the event, well deserved. We have occupied more space than we had intended, in considering the Senators from the slave States, and will now attempt to speak of some of the more prominent Northern statesmen, in this paper, and perhaps continue their consideration more at length in a future number.