George Sutherland, White v. Sparkill Realty Corporation…
“ But both the statute and the equity rule refer, and can only refer, to cases of which the court would have jurisdiction if they were brought on its law side. This is not such a case. The parties are citizens, not of different states, but of the same state. And if the plaintiffs were suing at law in ejectment, their complaint, if confined to an orderly statement of such a cause of action, without anticipating possible defenses, would not present a case arising under the Constitution, or a treaty or law of the United States. ”
