We need cite no authority in support of the principle that a motion to dismiss an action as in case of nonsuit is treated as a demurrer to the evidence construed in the light most favorable to the plaintiff. This is elementary, and the evidence tested by this principle was sufficient to uphold the verdict. The motion to nonsuit was therefore properly overruled.
The defendant excepted to certain evidence on the ground that it embodied a rejected offer of compromise. It is true, if a peráon offer to compromise a demand he does not thereby necessarily admit that it is just, but if pending a compromise he'make-a distinct admission of an independent fact the admission may be received in evidence. Daniel v. Wilkerson, 35 N. C., 329; Smith v. Love, 64 N. C., 439; Baynes v. Harris, 160 N. C., 307; Comrs. v. Scales, 171 N. C., 523.
Upon this principle certain admissions or declarations of the defendant would have been competent even if the parties had been negotiating a compromise; but, as we understand the record, instead of trying t«* effect a compromise the plaintiff steadfastly insisted that the defendant should pay him the full value 'of the lot.
Exceptions were taken to his Honor’s refusal to give certain prayers for instructions which were based upon the plaintiff’s abandonment of the allegations of fraud in procuring the execution of the deed, of an alteration in the deed after it had been delivered, and of the mutual mistake of the parties, but these exceptions are not tenable. The judge definitely instructed the jury that the plaintiff relied only upon the allegations in reference to the insertion in the deed of lot No. 6 through the draftsman’s mistake and the defendant’s fraudulent acceptance of the deed with full knowledge of the facts; and the first issue, it will be noted, strictly conforms to these allegations.
Exceptions 12, 13, 15, 16 and 17 are addressed to instructions as'to the burden of proof, the defendant contending that the alleged cause of action could be maintained only by evidence that was clear, cogent, and convincing, and not by a mere preponderance, as his Honor charged.
*579In civil cases the general rale is that a preponderance of the evidence is sufficient to determine the verdict, and this rule will apply in .the instant case unless the allegations demanded a greater degree of proof. It will be noticed that the first issue is simple, the only question being whether the defendant with intent to deceive accepted the deed knowing that by another’s mistake he was getting a lot that he had not purchased.
Our decisions recognize the principle that in an action to obtain remedial relief against the apparent force and effect of a written instrument on the ground of fraud, mutual mistake, or other similar cause, or to restore such instrument when lost, the evidence must be clear, cogent, and convincing; and in applying the principle the Court has held that this degree of proof is necessary, for example, to correct a mistake in a deed or other writing, to establish a lost deed, to convert into a mortgage a deed which is absolute on its face, to attach a parol trust to a legal estate, and to impeach the probate of a married woman’s deed. Plummer v. Baskerville, 36 N. C., 252; Fisher v. Carroll, 41 N. C., 485; Moore v. Ivey, 43 N. C., 193; Ely v. Early, 94 N. C., 1; Loftin v. Loftin, 96 N. C., 95; Kornegay v. Everett, 99 N. C., 30; Hemphill v. Hemphill, ibid., 436; Pollock v. Warwick, 104 N. C., 638; Summers v. Moore, 113 N. C., 394; Nimocks v. McIntyre, 120 N. C., 326; Porter v. White, 128 N. C., 42; Benedict v. Jones, 129 N. C., 470; Warehouse Co. v. Ozment, 132 N. C., 839; Avery v. Stewart, 136 N. C., 426; Lehew v. Hewett, 138 N. C., 6; King v. Hobbs, 139 N. C., 170; McWhirter v. McWhirter, 155 N. C., 145; Cunningham v. Long, 186 N. C., 526.
In all these cases and in others holding that clear, strong, and convincing evidence was necessary the plaintiffs sought relief against an interest or claim which might be defeated by restoring a lost instrument or against the apparent effect of an existing instrument which was the subject of litigation. In each case the purpose was to create a situation or to bring about some change that was inconsistent with the apparent effect of the writing or to show that such writing had' been lost or destroyed. But when the relief demanded was that the deed should be declared void because it was procured by fraud or undue influence or because it was executed with intent to hinder, delay or defeat creditors, the decisions have held uniformly that a preponderance of evidence was sufficient to establish the material allegations. Harding v. Long, 103 N. C., 1, 9.
It must not be forgotten that the object of the present action is not to correct or even to set aside or modify the defendant’s deed, or to obtain relief against its apparent effect. The deed remains intact; but the object is to recover the value of the lot, the retention of which by the defendant would constitute unearned benefit or “unjust enrichment.” *580'Williston says, “The same principle of justice which requires the return of money paid under a mistake requires that other benefits received under a similar mistake should likewise be restored.” Contracts, vol. 3, sec. 1575. The suit has its foundation in the doctrine of quasi-contracts — obligations occupying a field between contract and tort. They are imposed or created by law without regard to any agreement on the part of the party,bound, because his promise is. fictitious and his liability arises from implication of law, as when a person by wrongfully detaining or appropriating the property of another becomes liable to the owyier for its reasonable value. 13 C. J., 244 (10); 6 R. C. L., 588 (7).
The plaintiff contended that he did not sell the defendant lot No. 6, and that the defendant, knowing the lot was inserted in the deed by mistake, accepted the conveyance with intent to deceive. Under these circumstances the plaintiff was required to establish the affirmative of the issue, as under .the general rule, only by. a preponderance of the evidence.
' We have examined the other exceptions but they require no discussion.
We find no error in the record.
No error.