John Archibald Campbell, Wickliffe v. Owings — Opinion of the Court
“ The doctrine of this court is settled, that when the jurisdiction of the circuit court appears, by proper averments, on the record, the defendant can only impugh it in a special plea. The 39th rule of practice for courts of equity in the United States, adopted by this court, excludes 'matters of abatement, objections to the character of parties and to matters of form,' from the answer, and confines its operation to 'matters in bar, or to the merits of the bill.' It is proper to say, that if the fact of citizenship was open to inquiry, the evidence sustains the allegation of the bill. ”
