¶1Opinion by
¶2The plaintiff alleged in his statement that he owned and operated a stone quarry and had contracted with one Bender to sell and deliver to him stone to be taken from his quarry; that the defendant owned and operated a quarry adjoining that of the *455plaintiff; that the defendant closed a public road leading from the plaintiff’s quarry, thereby preventing the latter from delivering stone to Bender under his contract; “ that he continued so to obstruct the said road until enjoined therefrom by the court of common pleas, No. 3 of Allegheny county, at No. of August term, 1898; ” that by reason of the delay occasioned by the obstruction above mentioned Bender rescinded the contract made with the plaintiff and awarded the same to the defendant; and “ that by reason of the premises, and by reason of the fact that the plaintiff, during the continuance of the obstruction of the road as above stated, was deprived of the use of his men and teams, and also by reason of other consequences necessarily resulting from the unlawful acts of the defendant as aforesaid, he has been damaged,” etc. The defendant demurred to the statement, and amongst other things, said: “ And the said defendant avers that the said bill in equity has been fully determined and ended, wherefore said defendant avers that for the damages, if any, sustained by the said plaintiff, as averred in his said statement or declaration, the remedy, if any, was in the equity proceeding aforesaid, and that he is estopped from maintaining an action at law to recover damages for illegal trespass,” etc.
¶3A speaking demurrer, or one that sets up grounds of demurrer dehors the declaration is bad, and will not be entertained : 1 T. & H. Pr. sec. 582. A demurrer to a declaration or statement arises on its face and is never founded on matters collateral to the pleading which it opposes: Wyoming County v. Bardwell, 84 Pa. 104. Therefore, the averment that the “ bill in equity has been fully ended and determined,” if intended as an averment that a final decree enjoining the defendant has been entered therein, must be regarded as out of place in the demurrer. Nor is the fact necessarily to be implied from anything averred in the statement. The facts properly before us on the pleadings are, that the unlawful and injurious act of which the plaintiff complains in the present action was the subject-matter of his complaint in an equity suit instituted in another court and that in that suit the court issued an injunction, but whether this was interlocutory or final, and whether the equity suit was pending at the time the action was instituted, or, if ended, how it was determined, and whether the Bender *456contract was rescinded, and the pecuniary damages consequent thereon had accrued, before the injunction was decreed, are all matter of fact upon which the plaintiff’s statement furnishes no certain information. Nor was it necessary that it should. In other words, the averment as to the issuing of an injunction was not an essential part of the plaintiff’s statement of his cause of action : his action is not upon the record in that suit; hence, neither can it be claimed, that the statement is defective because it does not set it forth fully, nor can it be asserted that the court could upon demurrer to the statement, look into that record. The plaintiff is bound by his averment, but nothing further is to be taken against him which rests on mere argument or uncertain inference. To sustain the judgment entered on the demurrer in the'defendant’s favor, we must either infer, that the injunction referred to in the plaintiff’s statement was issued or made permanent upon final hearing, or hold, that it is immaterial whether the order or decree was interlocutory or final. We are of opinion that neither of these positions is tenable. The general rule is, that a decree or judgment to be conclusive must be final, and as we have already intimated, it is not to be presumed from anything contained in the plaintiff’s statement that such decree was entered in the equity suit.
¶4Moreover, even assuming that the decree referred to in the plaintiff’s statement was entered upon final hearing, it does not necessarily follow that the question of the plaintiff’s damages is res adjudicata. While it is well settled that where an injunction is granted the court may decree an account of the damages suffered (Allison and Evans’s Appeal, 77 Pa. 221; Walters v. McElroy, 151 Pa. 549), yet an examination of the cases shows that the grounds upon which such damages are allowed are not the same as those upon which damages are allowed in a bill for specific performance. Where it appears that specific performance was possible at the commencement of- the suit by the vendee, and whilst the action is pending the vendor, in any way, renders the remedy impracticable or inadequate, the court will not compel the plaintiff to bring a second action at law, but will do full justice by decreeing a recovery in damages. This is the only way in which the court can give the plaintiff the full relief which he claims and to which he was entitled when he brought his suit. Speaking of such a case Mr. Justice *457CXiAKK said: “The specific performance of the contract of June 2, 1881, was the subject-matter of the suit in equity, and that subject-matter was, in its nature and by the terms of the contract, entire, and was, as we have said, within the peculiar and exclusive jurisdiction of equity. The contract covered the conveyance of the land as it existed at the time; and the suit for the specific performance of it was an action upon the contract in its entirety; if during the pendency of the proceedings, by the act of the defendant the plaintiff could not have had the full benefit of the contract, the latter was entitled to damages, as part and parcel of his claim under the bill. The question of damages did not come collaterally in question, and thus only incidentally cognizable in the equity jurisdiction, but was presented directly. The award and assessment of damages were therefore necessarily and directly involved in the decree, and if no damages were in fact awarded, we must assume that none were sustained: ” Head v. Meloney, 111 Pa. 99.
¶5In a bill for injunction it is not absolutely and in all cases necessary for the plaintiff to show the past damages he has suffered in order to obtain the full relief which he prays. The court may award them, but only as incidental to the other relief sought, and not, as in specific performance, as part of, or as a substitute for, that relief. A judgment is not evidence of any matter which comes collaterally in question, or which is incidentally cognizable or which is to be inferred by argument from it. The conclusive effect of a judicial decision cannot be extended by argument or implication to matters not actually heard and determined, nor to collateral questions which arise but do not become part of the case. The estoppel of a former adjudication will extend only so far as the subject-matter of the second suit is substantially the same as that of the first, “ and may be binding on some points while leaving others open to controversy: ” Schwan v. Kelly, 173 Pa. 65. In the case upon which the defendant’s counsel rely (Head v. Meloney) Mr. Justice Clakk said: “It is certainly true, as stated in Tams v. Lewis, 42 Pa. 410, that a former judgment is not conclusive of anything which was not directly decided by it, or was not material to the decision. Before such effect can be given to it in another suit, it should appear either from the record or aliunde, that it must have rested on the precise ques*458tion, which it is sought again to agitate. Whether this is so or not may appear from the record itself, or it may be shown by evidence not inconsistent with the record. See, also, Duchess of Kingston’s Case, 20 State Trials, 538; Hibshman v. Dulleban, 4 Watts, 183.” Whatever may be the general rule upon the subject, we can conceive of injunction cases where the omission of the plaintiff to claim, and of the court to award, damages would not conclude him. That this was not such a case cannot be inferred with certainty from the mere fact that the court awarded an injunction. Where, upon facts disclosed by the pleadings, an estoppel is shown, the adversary party may take advantage of such estoppel without pleading it and without making affirmative proof of the fact. But where such estoppel does not appear on the face of the plaintiff’s statement and the judgment or decree of another court is set up as an estoppel, the whole record should be produced in order to enable the court to construe the judgment or decree in the light of all the grounds on which it is founded and to determine what the issue was. In the latter case the question cannot be decided on demurrer to the statement. Without going further into the discussion of the question of the conclusive effect of an injunction decree upon the question of the plaintiff’s damages we conclude that the facts averred in the. plaintiff’s statement do not, of themselves, estop him from maintaining the present action.
¶6The order sustaining the demurrer is reversed and set aside at the costs of the defendant, the demurrer is overruled and the cause is remitted to the court below to be further proceeded with according to law.