Melville Fuller,
Huguley Manufacturing Company v…
“ If the jurisdiction of the circuit court rests solely on the ground that the suit arises under the Constitution, laws, or treaties of the United States, then the jurisdiction of this court is exclusive, but if it is placed on diverse citizenship, and also on grounds independent of that, then, if carried to the court of appeals, the decision of that court would not be made final, and appeal or writ of error would lie. ”
