Mr. Sumner, after much hesitation, has finally pronounced for Mr.
Greeley, and has adressed a letter to the Negroes, urging them to vote for the Democratic candidate. It is not likely that the negroes will comply, but Mr. Sumner will carry with him a -considerable body of Republicans, who will feel assured that he would support no Government which declines to protect the negro. There is a rumour that Mr. Sumner is to be Secretary of State if Mr. Greeley is elected, but these rumours are always flying about during a Presidential campaign. If he is Secretary, it will be diffi- cult for foreign Powers, and especially Great Britain, to maintain -cordial relations with the Union. Very able, very eloquent, and perfectly honest, Mr. Sumner is unfortunately one of those men who are unable to believe that an idea which he rejects can be honestly entertained by anybody else.