The ordinance for those purposes, which was passed by Congress in 1787, contains certain articles, which are called "Articles of compact between the original States and the people and States within the said territory, for ever to remain unalterable, unless by common consent." The sixth of those unalterable articles provides, "that there shall be neither slavery nor involuntary servitude in the said territory." The Constitution of the United States supplies the defect that existed in the articles of confederation, and has vested Congress, as has been stated, with ample powers on this important subject. Accordingly, the ordinance of 1787, passed by the old Congress, was ratified and confirmed by an act of the new Congress during their first session under the Constitution. The State of Virginia, which ceded to the United States her claims to this territory, consented by her delegates in the old Congress to this ordinance--not only Virginia, but North Carolina, South Carolina, and Georgia, by the unanimous votes of their delegates in the old Congress, approved of the ordinance of 1787, by which slavery is forever abolished in the territory northwest of the river Ohio. Without the votes of these States, the ordinance could not have passed; and there is no recollection of an opposition from any of these States to the act of confirmation, passed under the actual Constitution. Slavery had long been established in these States--the evil was felt in their institutions, laws, and habits, and could not easily or at once be abolished. But these votes so honorable to these States, satisfactorily demonstrate their unwillingness to permit the extension of slavery into the new States which might be admitted by Congress into the Union. The States of Ohio, Indiana, and Illinois, on the northwest of the river Ohio, have been admitted by Congress into the Union, on the condition and conformably to the article of compact, contained in the ordinance of 1787, and by which it is declared that there shall be neither slavery nor involuntary servitude in any of the said States.