The facts out of which this suit arose are fully set forth in Old Colony Trust Co. v. Omaha, 230 U. S. 100, 57 L. ed. ——, 33 Sup. Ct. Rep. 967, and need not be repeated here. The electric company brought the suit in the circuit court, against the city and its electrician, to enjoin the threatened disconnection, pursuant to the resolution of 1908, of the company's wires used in supplying its patrons with electric current for power and heating purposes. There was a decree for the defendants (172 Fed. 494), which was affirmed by the circuit court of appeals (102 C. C. A. 601, 179, Fed. 455), and a further appeal brought the case here.

Our jurisdiction is challenged, by a motion to dismiss, on the ground that the decision of the circuit court of appeals is final. The motion is well taken if the jurisdiction of the circuit court was invoked solely on the ground of diverse citizenship. Act of March 3, 1891 (26 Stat. at L. 826, chap. 517 § 6, U. S. Comp. Stat. 1901, p. 488); Judicial Code, § 128 [36 Stat. at L. 1133, chap. 231, U. S. Comp. Stat. Supp. 1911, p. 193]. That it was invoked on that ground is conceded, so it is necessary to inquire whether, as is asserted in opposition to the motion, it was also invoked upon the ground that the suit was one arising under the Constitution of the United States. This must be determined from the plaintiff's statement of its own cause of action as set forth in the bill, regardless of questions that may have been subsequently brought into the suit. Shulthis v. McDougal, 225 U. S. 561, 569, 56 L. ed. 1205, 1210, 32 Sup. Ct. Rep. 704; Denver v. New York Trust Co. 229 U. S. 123, ante, 657, 33 Sup. Ct. Rep. 657.

Briefly described, the bill set forth the adoption by the city council of the franchise ordinance of 1884, its acceptance by the Thompson Company, the construction and installation of the electric plant, the transfer of the plant and franchise to the electric company in 1903, the business done by the two companies in supplying current for power and heating, as well as for lighting, purposes, the enlargement and improvement of the plant from time to time to meet the increasing demand for current for those purposes, the city's acquiescence in and encouragement and sanction of all this with knowledge that it was done under a claim of right under the franchise ordinance, the exaction by the city of 3 per cent of the gross earnings, including those from current supplied for power and heat, the adoption of the resolution of 1908, and the threatened disconnection thereunder of all wires used for transmitting current for power and heating purposes. The bill further charged that in what was done prior to the resolution the city and the two companies had treated the franchise as including the right to use the streets in transmitting current for power and heat; that upon the faith of this practical construction the plaintiff had expended large sums of money in developing and equipping its plant according to approved modern standards; and that the interference with its wires and business which was threatened by reason of the changed attitude of the city would result in great and irreparable loss and damage to the plaintiff.

The relief sought was a perpetual injunction restraining the defendants from disconnecting the plaintiff's wires or interfering with or impeding its business as theretofore conducted. There was no prayer that the resolution be pronounced void, nor any allegation that it impaired the franchise contract, or would operate to deprive the plaintiff of its property without due process of law, nor any reference to the Constitution of the United States, or any of its provisions, nor even a general statement that a constitutional right was being or about to be infringed.

Tested by the recognized standard, we think the bill did not state a case arising under the Constitution. It did not show, either in terms or by necessary intendment, that the plaintiff was asserting a right, privilege, or immunity under the Constitution, or was in anywise invoking its protection. For anything that appeared, the plaintiff was planting its right to relief entirely upon the doctrine of estoppel. As a basis of jurisdiction, it is not enough that recovery might be sought upon a constitutional ground, for it must clearly appear that it is actually so sought. Crowell v. Randell, 10 Pet. 368, 392, 9 L. ed. 458, 467; Hanford v. Davies, 163 U. S. 273, 280, 41 L. ed. 157, 159, 16 Sup. Ct. Rep. 1051.

It being thus apparent that diverse citizenship was the sole ground upon which the jurisdiction of the circuit court was invoked, it follows that the decision of the circuit court of appeals was final. Spencer v. Duplan Silk Co., 191 U. S. 526, 48 L. ed. 287, 24 Sup. Ct. Rep. 174; Bankers's Mut. Casualty Co. v. Minneapolis, St. P. & S. Ste. M. R. Co. 192 U. S. 371, 48 L. ed. 484, 24 Sup. Ct. Rep. 325; Shulthis v. McDougal, 225 U. S. 561, 569, 56 L. ed. 1205, 1210, 32 Sup. Ct. Rep. 704; Lovell v. Newman, 227 U. S. 412, 57 L. ed. ——, 33 Sup. Ct. Rep. 375; Denver v. New York Trust Co. 229 U. S. 123, 57 L. ed. ——, 33 Sup. Ct. Rep. 657.

Appeal dismissed.

Mr. Justice Holmes took no part in the consideration and decision of this case.