The friends and supporters of the Nebraska and Kansas act, when struggling on a recent occasion to sustain its wise provisions before the great tribunal of the American people, never differed about its true meaning on this subject. Everywhere throughout the Union they publicly pledged their faith and their honor that they would cheerfully submit the question of slavery to the decision of the _bona fide_ people of Kansas, without any restriction or qualification whatever. All were cordially united upon the great doctrine of popular sovereignty, which is the vital principle of our free institutions. Had it then been insinuated from any quarter that it would be a sufficient compliance with the requisitions of the organic law for the members of a convention thereafter to be elected to withhold the question of slavery from the people and to substitute their own will for that of a legally ascertained majority of all their constituents, this would have been instantly rejected. Everywhere they remained true to the resolution adopted on a celebrated occasion recognizing "the right of the people of all the Territories, including Kansas and Nebraska, acting through the legally and fairly expressed will of a majority of actual residents, and whenever the number of their inhabitants justifies it, to form a constitution with or without slavery and be admitted into the Union upon terms of perfect equality with the other States." The convention to frame a constitution for Kansas met on the first Monday of September last. They were called together by virtue of an act of the Territorial legislature, whose lawful existence had been recognized by Congress in different forms and by different enactments. A large proportion of the citizens of Kansas did not think proper to register their names and to vote at the election for delegates; but an opportunity to do this having been fairly afforded, their refusal to avail themselves of their right could in no manner affect the legality of the convention.