Was it Taney who said “Slavery is the naturally intended condition for the black African’’?
I did a Google search. I did not find a reference of Taney saying that. A Wikipedia article quotes Taney as writing in Dred Scott: It is difficult at this day to realize the state of public opinion in regard to that unfortunate race which prevailed in the civilized and enlightened portions of the world at the time of the Declaration of Independence, and when the Constitution of the United States was framed and adopted; but the public history of every European nation displays it in a manner too plain to be mistaken. They had for more than a century before been regarded as beings of an inferior order, and altogether unfit to associate with the white race, either in social or political relations, and so far unfit that they had no rights which the white man was bound to respect." I take this to be historical context for issues he and the other justices were facing in the 1850s.