Judge Ewing delivered the Opinion of the Court. This was an action of covenant brought on a paper signed by Pettit, for stock to construct a turnpike road from Russellville to the Cumberland river. The covenant binds the subscribers “to pay fifty dollars for each share set opposite to each of their respective names, in-such manner and proportions and at such times as shall be required by the President and managers of the said company, and agreeably to

an act of the General Assent bly of Kentucky incorporating said company, approved, 16th Feb. 1838.” The defendant pleaded, in substance,, that it was agreed between him and the plaintiffs that the road should be made on the bed or rout of the old road, and be ran by the house of the defendant, and that if it were not so run, he was not to pay for the shares subscribed by him, and avers that it was not so run, and that the location of the same as aforesaid, near the house of the defendant, was the only consideration of his subscription.

To this plea there was a demurrer which was overruled by the Court, and a judgment rendered against the plaintiffs, who have appealed to this Court. The face of the covenant and law to which it makes reference, shows the terms and- true consideration upon which the covenant was made, namely, the erection of the road°as prescribed by the charter, or the undertaking to do so. And Pettit having signed the subscription list without condition or restriction, or a variation of those terms, must abide by them and be presumed to have undertaken to pay upon the consideration implied in the covenant and the law.

To allow him to aver another and different consideration, would be to allow him to inter polate and prove by parol, other terms and conditions than those expressed or necessarily implied, and that without the averment of fraud or even of mistake, if the latter conld be taken advantage of at law. The plea was, therefore, bad, and the demurrer to it should have been sustained. . Morehead cf Iieed for plaintiffs; Owsleij <$• Goodloe for defendant. Judgment reversed and cause remanded, that the demurrer may be sustained.