The parol testimony clearly establishes the contract as claimed by plaintiff. The plaintiff’s testimony,'as to the terms of the contract, is clear and positive, and he is corroborated with more or less directness and force by the testimony of six witnesses: The defendant denies that the contract was made as claimed b}7 plaintiff, and with equal positiveness testifies that its terms were as set up by him in his answer. He is corroborated solely by the testimony of his wife. The preponderance of the testimony is very clearly and satisfactorily in favor of 'plaintiff. The only question is whether of not any of this testimony can be admitted and considered under the provisions of -sections 3663-3666 of the Code, which are a substitute for the provisions known as the Statute of Frauds.
l. statute of pmformanee: eviiience. It is conceded by appellee that parol evidence ■ cannot be admitted, and that consequently. this contract cannot be en-f°rceff unless the parties have done some- act which will remove the inhibition of such testimony. The testimony shows that the right to use the shaft and to mine coal from the ten acres of plaintiff was, with the concurrence and assent of defendant, granted to Michael and James Weir, and that for this use of plaintiff’s premises the defendant received from thirty to sixty-five dollars, the defendant admitting the receipt of the former sum, and the *37plaintiff testifying that defendant received the latter sum. The proof shows that the plaintiff and the defendant went together to the "Weirs for the rent, and received it from them. This evidence establishes possession and acts of control on the part of defendant over an interest in the premises of plaintiff.
2 _._. anoe°ofdevidenoe.
It is claimed upon the part .of appellant, however, that this, possession is just as consistent with the defendant’s claim respeeting the contract, as with that of plaintiff, ar1^ that hence the possession is not unmistakably referable to the contract as claimed by plaintiff. It is true the defendant testifies that he was to have two-thirds of the coal in this ten acres of plaintiff’s, under another arrangement, for the purpose of rendering the division of the land more nearly equal, and that the possession assumed by defendant is as consistent with his testimony as with that of plaintiff. It is also true that in order to take a case out of the operation of the Statute of Frauds, upon the ground of part performance of a parol contract, it is indispensable that the acts done should be referable exclusively to the contract; Story’s Equity Jurisprudence, sections 762-764, and cases cited; Phillips v. Thompson, 1 Johnson’s Ch., 131; Fry on Specific Performance, section 384; Harris v. Knickerbocker, 5 Wendell, 638. But this does not mean that there should be an entire absence of conflict in the testimony. If this were ■so, the party against whom the specific performance is sought could almost always defeat the plaintiff by setting up some other contract, to which the acts of part performance might be referred, and by producing some evidence, although opposed to the decided and clear preponderance of the evidence, to support such contract. This case furnishes a striking and apt illustration. The possession by defendant of an interest in plaintiff’s coal mine is clearly proved and is conceded. The plaintiff testifies that defendant obtained this possession under an agreement that plaintiff was to convey to defendant two-thirds the coal in forty acres of land, and defendant was to convey to plaintiff one-third of the coal in eighty acres of land. The defendant testifies that he obtained this possession *38under an agreement that defendant was to have two-thirds the coal in plaintiff’s ten acres, in order to make the division of the land more equitable. Either theory fully accounts for the possession. The plaintiff is corroborated by six witnesses; the defendant by one.
Now, it is claimed, notwithstanding this decided preponderance in favor of plaintiff, that because the possession might have been taken under the agreement as claimed to exist by defendant, it is not solely referable to the contract contended for by plaintiff', and that all parol evidence of the agreement must be rejected. This cannot be the true rule.
If the acts relied upon are of a doubtful or equivocal character, and may have been done with other views than as part performance of an agreement, then they do not take the case out of the operation of the statute. But where, as in this case, the acts are done pursuant to, and in part performance of some agreement, and the sole question is whether they are done in performance of the contract as claimed by defendant, or in performance of the contract as claimed by plaintiff, then the question must 'be resolved by the preponderance of the evidence.
3. contract: mutuality. Appellant insists, however, that the fact that defendant has taken possession of plaintiff’s coal bank will not enable plain- ^ to enforce the contract, but that, to that end, plaintiff should have taken possession of defendant’s bank. But the obligation of a contract must be mutual. Both parties must be bound or neither party is bound. Appellant’s theory is that only the party who takes, possession can enforce the contract. Suppose A. and B. enter into a parol agreement for the exchange of farms, A. takes possession of B’s. farm under the contract, but B. does not take possession of A’s. farm. It cannot be that A. can compel a specific performance on the part of B., but at the same time A. cannot be compelled to perform by B.
4.-: speance f equity, It is urged, further, that the specific execution of agreements rests in the sound discretion of the court, and that, in the exercise of that discretion, a specific performanee should not bo decreed in this case. Citing *391 Story’s Eq., Sec. 742, and eases cited; Rudolph v. Covell, 5 Iowa, 525; Young v. Daniels, 2 Iowa, 126; Austin v. Miller,. 18 Iowa, 403; Richmond v. Dubuque R. R. Co., 33 Iowa, 432, and other cases.
The discretion to be exercised is not an arbitrary or capricious one, but one governing itself, as far as may be, by general rules and principles. In Rudolph v. Covell, supra, it is said that it is always desirable to make the least draft which is possible upon this undefined power of discretion, and to determine causes upon established rules.
In this case the agreement has regard to an interest in real estate; it has been partly performed, and its terms are satisfactorily established and are clearly defined. The contract is not shown to be unconscionable or unreasonable. We know of no legal principle upon which a specific performance of it should be refused. The decree of the court below is
Affirmed.