Suit by appellee against appellant and G. W. Carlton to recover against appellant C. D. Martin, as maker, and G. W. Carlton, as indorser, the amount due on one note for $500 of date March 30, 1920, and due January 1, 1925, said note having been given by appellant to G. W. Carlton and by said Carlton sold sind indorsed to ap-pellee. Said nóte was, in fact, one of á series of 10 vendor’s lien notes given to Carlton by appellant for a part of the purchase money for a tract of land, but appellee made' no effort to so show or to foreclose the vendor’s lien. The defendant Carlton filed no answer. Appellant Martin (filed a general demurrer, a general denial, and a plea of payment and release of the vendor’s lien by appellee. In reply to said plea of payment and release of the vendor’s lien, appellee filed its first supplemental petition, in which it demurred to appellant’s answer and denied the allegations therein contained, and pleaded specially, the circumstances under which said release was obtained by appellant by reason of a mistake on the part of appellee, and denied that said note had, in fact, been paid. On the trial of the ease before a jury, appellee introduced in evidence its vendor’s lien note sued'upon, and rested. Appellant introduced in evidence its release, and rested. Each side filed a motion for an instructed verdict. The court overruled appellant’á said motion and granted appellee’s, and, on the verdict so instructed, entered judgment for appellee, plaintiff below, for the amount of said note, including principal, interest, and attorney’s fees, against appellant, as maker, and G. W. Carlton as indorser. Carlton has not appealed. Appellant Martin alone has appealed.
Under his first proposition, appellant contends that, as appellee pleaded that it had given a release for the note in question, but that said release had been given by mistake and that said note had not, in fact, been paid, as shown by said release, the burden of proof was upon appellee to prove said facts, and the court erred in instructing a verdict against appellant without requiring appellee to discharge such burden. It is a general rule of law that the defendant who pleads payment bias the burden of proving such payment. This rule of law is in harmony with the further rule that the burden of proof is upon the party asserting-the affirmative of an issue. If he alleges a fact that is denied, he must establish it. He is the actor, and as such remains so throughout the case as to the allegations, which he makes, or, rather, must make. Having alleged the truth of a matter in issue, he must prove it. The party denying his allegations cannot have this burden at any time during the trial, for it would be absurd to say that both the plaintiff and defendant have the same burden on the same issue. Hence, the common phrase that the burden of proof never shifts, though the burden of going forward with the evidence may shift at various times during the trial from one side to the other as the evidence is introduced by the respective parties., 22 C. J. 69.
When the appellee in this ease introduced in evidence the note sued upon, it made out a prima facie right of recovery for the amount of said note, and when appellant introduced his release, duly signed and acknowledged by the president of appellee bank, reciting said note to be fully paid and releasing the vendor’s lien securing same, appellant had completely rebutted the prima facie case made by appellee by introducing its note. It was not the duty of appellant to proceed with evidence to prove that said release was not executed by mistake — a negative. Appellee had alleged it was so executed. It was necessary for it to so allege ahd prove in order to avoid said release, and, having so alleged, the burden was upon it to sustain the affirmative of said issue by evidence. This issue as to whether said release was executed and delivered by mistake having been made by the pleadings of the parties, appellee affirming said fact .and appellant denying same, it was incumbent upon appellee to proceed with its evidence to show said release, was executed by mistake, as alleged, and upon appellant to produce evidence to rebut appellee’s evidence of mistake. In other words, by the introduction of the release appellant sustained the burden of proving payment, unless appellee by pleading and evidence could avoid the effect of said release. Appellee’s special plea was in the nature of a plea in confession and avoidance; it admitted the execution of the release, but sought to avoid the effect of same by pleading facts to show it was executed by mistake, and, of course, on this issue the appellee had the laboring oar. Baker v. Pierce et al. (Tex. Com. App.) 259 S. W. 921, and cases there cited. For an elaborate and instructive discussion of the burden of proof bearing upon the question here discussed, see Bank v. Ford, 30 Wyo. 110, 216 P. 691, 31 A. L. R. 1441. In the first case above cited the Commission of Appeals, in an opinion approved by the Supreme Court, decided the very question here involved in *242favor of appellant’s contention. We sustain this assignment. The trial court was in error in directing a verdict for appellee, for which error the case, will he reversed.
Appellee contends that appellant’s plea of payment was insufficient. There was no demurrer or special exception’interposed to said plea called to the attention of the trial court. The only way in which the sufficiency of said plea was challenged was by objection to the introduction of the release in evidence on the ground of the insufficiency of the plea of payment. In the absence of special exception challenging the sufficiency of said plea, acted upon by the trial court, we think said plea was sufficient.
The other questions involved will not likely arise upon another trial. Appellant contends we should reverse and render, but, as it is evident from the record the case was not fully developed in the trial court, we think the ends of justice require that the cause be remanded for another trial.
Reversed and remanded.