We are at a loss to understand upon what
principle of law, applicable to appellate jurisdiction, it can be supposed that this court has not judicial authority to correct the last - mentioned
error because they had before corrected the former, or by what process of reasoning it can be made out that the
error of an inferior court
in actually pronouncing judgment for one of the parties
in a case
in which it had no jurisdiction can not be looked into or corrected by this court because we have decided a
similar question presented
in the pleadings.