Per Curiam. *

It is not material in this case whether the mill act (Laws 1868, e. 20; Gen. Laws, e. 141, ss. 15-19) is an act of eminent domain, as it is held to be in this state ( Great Falls Manufacturing Co. v. Fernald, 47 N. H. 444), or a regulation of waterpower, as it is held to be by the federal court. Head v. Amoskeag Manufacturing Co., 113 U. S. 9. It authorizes the defendants to flow the plaintiff’s land. It also authorizes either party to bring a suit of this kind for the assessment of damages for an injury done to the land-owner by the mill-owner’s exercise of his statutory right of flowage. It does not relate to the right of flowage which the defendants have bought and paid for; and it does not authorize a petition for the determination of the mere question whether the defendants have committed a tort by flowing the plaintiff’s land. For the determination of that question the common law provides ample procedure in a common-law action; and for the mere tort of wrongful flowage, the common law furnishes adequate remedies at law and in equity. This statutory proceeding provides for the assessment of damages when the mill-owner exercises the flowage right given by the mill act. On this subject the pleadings in this case present no issue. On the contrary, the defendants’ answer contains a disclaimer that prevents a trial of the question of damages for the exercise of the statutory right. It states explicitly what they claim and what they do not claim. It asserts nothing but a right to maintain the dam at a certain height. “ The plaintiff concedes the defendants’ right to maintain the dam at that height; ” and the answer says that the defendants “ intend to maintain their said dam at said height and no higher.” This is a disclaimer of a right to flow the plaintiff’s land under authority given by the mill act at the commencement *182 of this suit. If at that time the defendants had flowed the plaintiff’s land more than they had a contractual, common-law right to flow it, they are liable for the tort in an action at common law. Aldworth v. Lynn, 153 Mass. 53, 57. The answer is a conclusive record that estops them from ever claiming that at the commencement of this suit they were exercising a flowage right under the mill act. That act does not empower the plaintiff to compel the defendants to buy such a perpetual' right and to pay 150 per cent, for it, as a penalty for a wrongful flowage. Town v. Faulkner, 56 N. H. 255; Hovey v. Perkins, 63 N. H. 516, 526.

On the record made by the pleadings, the questions submitted to the jury were irrelevant and immaterial; there was a mistrial; and no judgment on the verdict can be rendered for the plaintiff. As the case stands, the defendants are entitled to judgment notwithstanding the verdict, and no reason appears why such a" judgment should not be rendered. The plaintiff can bring a bill in equity for the determination of the height at which the defendants have acquired a right to maintain their dam for flowage 'purposes. In such a bill, -all persons interested in the question should be joined as plaintiffs or defendants. The controversy, like that in Gardner v. Webster, 64 N. H. 520, is one not likely to be settled by many suits at law. The ground of equity jurisdiction is stated in that case, and in Connecticut River Lumber Co. v. Olcott Falls Co., 65 N. H. 290, 390-392. If the plaintiff prefers an action at law for tort she can resort to that remedy.

Gase discharged.

Cabpenteb, J., did not sit: the others concurred.

See foot-note on page 80.