Mr. Chief Justice Waite

delivered the opinion of the court.

The application for removal in this case was made under sect. 12 of the Judi.ciaiy Act of 1789. 1 Stat. 79. That section, so far as it is. important fot the determination of this case, reads as follows: —

“If a suit be commenced in any State court ... by a citizen óf the State in which the suit is brought against a citizen of another State, . . . and the defendant shall, at the time of entering his appearance in such State court, file a petition for the removal of the cause for trial into the next Circuit Court, ... it shall then- be the duty of the State court to . . . proceed no further in the cause.”

Clearly this'has reference to.the citizenship of the parties when the suit is begun; for the ^language is, “ If a suit be commenced by a citizen of the State in which the suit is brought against a citizen of another State, the defendant may, when he enters his appearance, petition for its removal.” The phraseology employed in the acts of 1866, 14 Stat. 307, 1867, id. 558, and 1875, 18 id. 470, and in the Revised Statutes, sect. 639, is somewhat different, and we are not now called upon to give a construction to the language there used. As to the act of 1789, we entertain no doubt in this particular.

This right of removal is statutory.' Before a party can avail himself of it, he inust show upon the record that his is a case which comes within the- provisions of the statute. His petition for rem^al, when.filed, becomes a part of the record in the *186 cause. It should state facts,- which, taken in connection with such as already appear', entitle him to the .transfer. If he fails in this, he. has not, in law, shown to the court that it cannot “ proceed further with the cause.” ’Having once acquired jurisdiction, the court iuay proceed unuil it is judicially informed that its power over the cause has been suspended.

It remains only to apply this rule to the facts as they appear in this record. The suit was commenced June 1, 1867. At that time there was nothing in the pleadings or process to-indicate the citizenship of the .plaintiff. The defendant, in its petition for removal, bearing' date June. 11, simply stated that the plaintiff is — ’that -is to say, was at that date — a.citizen of New York.- This certainly, is not stating affirmatively that such was his citizenship when the suit was commenced. The court had the right to take the case as made by the party himself, and not-inquire further. If that was not sufficient to oust the- jurisdiction, there was no reason why the court might not proceed with the cause. We think, therefore, that the Court of Appeals did not err in its decision.

Judgment affirmed.