Harold Hitz Burton,
Sears Roebuck and Company v. Mackey…
“ Of course, as the Court's opinion appears to recognize, that crucial principle of the doctrine of finality that the court of appeals has no jurisdiction unless there is a 'final decision' cannot be left to the district court. It is one thing for a district court to determine whether it is or is not through with a portion of a litigation. It is quite another thing for it to determine whether the requirements of § 1291 are satisfied so as to give jurisdiction to the court of appeals. ”
