Appeal from circuit court of Brown county. The complaint states two causes of action. The first for the recovery of $1 per acre commission, on a sale of 640 acres of land. The second for the recovery of $2.50 per acre for commission on a sale 'of 640 acres. The commission of $1 per acre was alleged to be due on a sale consummated under the terms of a written contract of agency between plaintiff and defendant. The commission of $2.50 per acre was claimed under a special oral contract, alleged to have been entered into between plaintiff and defendant while the written agency contract was in effect.
The answer admits the written agency contract, but denies the other allegations of the complaint. By the terms of the written contract, plaintiff agreed to act as local agent for defendant in effecting sales of land handled' by him, and to promote such spies by distributing advertising matter furnished, and endeavoring to induce persons to examine lands handled and for sale by •defendant. The contract provided for payment of a commission of $1 per acre on all lands sold by defendant through plaintiff, such commissions to be paid immediately after each sale had been closed, and to be full compensation for all services rendered in •such sale. Plaintiff agreed to act exclusively as agent for defendant, and for no other real estate firm, corporation, partnership, or individual in any way engaged in the sale of lands in the state of South Dakota during the life of the agency contract. Evidence in support of the first cause of action tended to show that in January, 1911, plaintiff interested one Barker, a resident of Ft. Pierre, in the purchase of land, brought him to the city of Aberdeen, and introduced him to defendant. Both, plaintiff and defendant accompanied Barker to North Dakota to examine lands for sale by defendant. At the conclusion of negotiations, Barker entered into' a contract with defendant for the purchase of 640 *609acres of the land, and paid $100 in cash. Thereafter defendant informed plaintiff that the deal with Barker had been closed, and that he had received a plung'e bath at Ft. Pierre, at a valuation of $9,000, and something between three and four thousand' dollars in cash, for the land, had delivered a deed therefor, and that the sale was closed; that no part of the commission had been paid.
Upon the second cause of action, evidence was received, over defendant’s objection, tending to prove that the defendant orally agreed with plaintiff that if plaintiff would induce one James Phillips to purchase either one of three sections of land in Brown county owned by defendant, which were priced’ respectively at $55, $60, and $65 per acre, he would pay plaintiff a commission of $2.50 per acre on such lands as might be sold or traded to Phillip; that, pursuant to this oral agreement, .plaintiff brought Phillip and introduced him to defendant at defendant’s office in Aberdeen; that Phillip was shown and examined these lands, and after some negotiations defendant traded to Phillip 640 acres of the land in exchangee for a stock of merchandise in Aberdeen and a plunge bath .at Ft. Pierre, valued at $9,000, which had been acquired by him in -the-trade set out in the first cause of action. A written contract in consummation of the trade was entered into between defendant and Phillip, -in which the valuation of the land was $65 per acre; a deed from defendant and his' wife to Phillip' for the land was offered and received in evidence: and plaintiff never received any compensation for his services in this transaction. Plaintiff demands $640 for services in this sale to Barker, and $1,600 in the sale to Phillip.
At the close of plaintiff’s evidence, defendant moved for direction of a verdict, which was denied and exception taken. Defendant then rested, without offering any evidence, and, upon plaintiff’s motion, a verdict was directed for plaintiff for the full amount of commissions claimed on both sales, to which defendant excepted.
Appellant’s assignments of error are grouped -.and discussed under three general propositions: First. That the court erred in directing a verdict -for plaintiff for the full amount claimed on *610both causes of action, for the reason (a) that the defendant 'had a right to have submitted to the jury the question of the credibility of plaintiff’s testimony upon which his right of recovery depends; (b) because oral evidence of the contents of the written contract between defendant and the purchaser, Phillip, was incompetent and not the best evidence. Second. That plaintiff’s recovery for services was, in any event, limited by the terms of the written contract of agency to a commission of $i per acre, and the oral evidence, by which plaintiff sought to show an agreement to pay $2.50 per acre commission, does not disclose an executed oral modification of the written contract of agency.
We shall consider these questions in the order named, [x] The record shows that at a time when all the evidence offered was before the court and jury each party presented a motion for direction of a verdict. It has been long settled' in this state that when each party, at the close of all the evidence, presents a motion for direction of a verdict this, in effect, is a submission of questions, both of law and fact, to -the court. Bower v. Jones, 26 S. D. 414, 128 N. W. 470; First National Bank v. North, 2 S. D. 480, 51 N. W. 96; Erickson v. Citizens’ Nat. Bank, 9 N. D. 81, 81 N. W. 46. The trial court 'has power, even in cases where a jury trial is a matter of legal right, to direct a verdict, when requested by both parties. People v. Scannell, 172 N. Y. 316, 65 N. E. 165. This rule is unquestionably sustained by 'the weight of authority. 38 Cyc. 1576 .(c), and cases cited. Appellant’s contention is that defendant’s motion for direction of a verdict challenged only the legal sufficiency of the evidence to sustain a verdict for plaintiff, conceding the testimony of plaintiff’s interested witness to be absolutely true; and that the credibility of plaintiff’s testimony was not thereby submitted to the trial court, but remained a question upon which defendant was entitled to a verdict of the jury. Appellant’s line of reasoning has been adopted in states whose courts have expressly disapproved the New York rule. Thompson v. Brennan, 104 Wis. 564, 80 N. W. 947; National Cash Register Co. v. Bonneville, 119 Wis. 222, 96 N. W. 558; German Saving- Bank v. Bates, 111 Iowa, *611432, 82 N. W. 1005; Wolf v. Chicago Sign Printing Co., 233 Ill. 501, 84 N. E. 614, 13 Ann. Cas. 369; Stauff v. Bingenheimer, 94 Minn. 309, 102 N. W. 694; Poppitz v. German Ins. Co., 85 Minn. 118, 88 N. W. 438; Lonier v. Ann Arbor Savings Bank, 153 Mich. 253, 116 N. W. 108 The reasoning of these cases as stated in Stauff v. Bingenheimer, supra, is: That “a motion by either party to an action that a verdict be directed in his favor cannot be construed as a waiver of the right to have the facts passed upon by the jury, or as an agreement to submit them -to the trial judge, in case the motion is denied.” The reasoning upon which the New York rule is founded is that parties have the right to waive a jury trial; and that motions by both parties for direction of a verdict is sufficient evidence of an intention to waive that right. The latter rule has been too long acted upon and settled in this state to warrant the adoption of the rule contended for by appellant.
[2] It has never been held in this state, however, that motions by both parties constitute a conclusive waiver of the right to demand a submission to the jury of questions of fact which may properly arise upon the evidence, where the contrary intention of the parties not to submit questions of fact to the court may be evidenced by a seasonable request that the facts be submitted to the jury. It is held in New York that a request for a submission of facts to the jury, where the evidence is of such character as to require it, may be made at any time before a directed verdict is returned by the jury. Eldredge v. Mathews, 93 App. Div. 356, 87 N. Y. Supp. 652; Maxwell v. Martin, 130 App. Div. 80, 114 N. Y. Supp. 349; Fuller v. Schrenk, 58 App. Div. 222, 68 N. Y. Supp. 781, affirmed in 171 N. Y. 671, 64 N. E. 1126. It is also held that a request for submission of questions of fact to the jury should specifically point out the matters it is desired to have submitted. Mayer v. Dean, 115 N. Y. 556, 22 N. E. 265, 5 L. R. A. 540. Such a request will not be granted after the rendition of the directed verdict. Persons v. Hawkins, 41 App. Div. 171, 58 N. Y. Supp. 831; Strohm v. Zoellner, 61 Misc. Rep. 56, 112 N. Y. Supp. 1063. The reason for the rule giving parties the right to submit questions of fact to the jury upon request, after *612an adverse ruling upon a motion for a directed verdict, is that every party is entitled to present to the court such legal questions as he thinks arise upon the testimony, without the penalty of losing his right to have the jury pass upon evidence which comes from interested witnesses, or is of such character that honest men might differ in the conclusions to be drawn therefrom. Otherwise, it is said, it would never be safe to- ask for direction of a verdi-ct. Switzer v. Norton, 3 App. Div. 173, 38 N. Y. Supp. 350. It is apparent, therefore, that a party, desirous of preserving his right to have the jury pass upon the evidence, where it is of such character as to be properly submitted, to a jury, may preserve, that right by a reasonable and proper request, after the motions for directed verdicts have been ruled upon by the court. Such request would ordinarily be a conclusive rebuttal of the presumption that, by motions for directed verdicts, the parties intended to submit questions of both law and fact to the court. Under the rule adopted by this court, however, when no such request is made, the presumption that parties intended to submit to the court all -questions, both of law and fact, -becomes conclusive.
[3] An exception! to an order directing a verdict presents no question1 for review, except tire legal sufficiency of the evidence to sustain the verdict directed. Questions of credibility of witnesses, and of inferences to be -drawn from evidence, are deemed submitted to the court! by motions of both parties; and the directed verdict has like effect as does a verdict returned- by the jury. Sundling v. Willey, 19 S. D. 293, 103 N. W. 38, 9 Ann. Cas. 644; Farmen v. U. S. Express Co., 25 S. D. 96, 125 N. W. 575. In the case at bar, the defendant excepted to the -order of the trial court directing a verdict -for plaintiff; but this exception presents for review nothing except the legal sufficiency of the evidence to sustain the verdict, and cannot be deemed an exception to a denial of his request to go to the-jury upon the evidence, for the plain reason that no such request was made. Ormes v. Dauchy, 82 N. Y. 443, 37 Am. Rep. 583.
[4] Appellant further contends that the court erred in receiving oral evidence of the contents of the written contract of ex*613change of properties between the defendant and Phillip, executed at the time the Brown county land was traded to Phillip. The rule requiring the production of a writing as primary evidence of its contents has no application, except where the -cause of action is founded upon -the writing itself. The rule is that “evidence relating to a matter which does not form the foundation of the cause of action, but is -collateral to the issue, does not properly fall within the best evidence rule, and, although secondary in itself, cannot be excluded, on the ground that primary evidence i-s obtainable.” 17 Cyc. 469 (d) ; N. J. Zinc Co. v. Lehigh Zinc Co., 59 N. J. Law, 189, 35 Atl. 915; Gilbert v. Duncan, 29 N. J. Law, 133; McFadden v. Kingsbury, 11 Wend. (N. Y.) 667; Carrington v. Allen, 87 N. C. 354; Dail v. Sugg, 85 N. C. 104; State v. Carter, 72 N. C. 99; Pollock v. Wilcox, 68 N. C. 46; Shoenberger v. Hackman, 37 Pa. 87; Holt v. Weld, 140 Mass. 578, 5 N. E. 506.
[5] We are inclined to the view, however, that appellant is right in his contention that the written contract of agency between plaintiff and defendant embraced the transaction set out in the second cause of .action, in which plaintiff seeks to recover a commission of $2.50 per acre, instead of the commission of $1 per acre provided for in the written contract; and that the evidence offered by plaintiff does not show an executed, oral modification of the written contract of agency as to the amount of commissions. It is respondent’s contention that an oral modification of a written contract is deemed to be executed whenever the part}' claiming under such oral modification has done and performed everything required of him by the oral contract. In this we think respondent is in error, and are of opinion that the allegod modification of the written contract of agency cannot he deemed executed, within the meaning of section 1287, Com-p. Laws, until payment has been made under it. Mettel v. Gales, 12 S. D. 632, 82 N. W. 181. Nor do we think that a different rule was recognized by this court in the case of Jones v. Longerbeam, 22 S. D. 625, 119 N. W. 1000. The latter case is analogous to 'the case of McKenzie v. Harrison, 120 N. Y. 260, 24 N. E. 458, 8 L. R. A. 257, 17 Am. St. Rep. 638, where an action was brought to recover rent alleged to be *614due and unpaid on a lease of real property in the city of New York, which provided for an annual rental of $4,500. Defendants . offered to prove that after they had occupied the premises and paid full rent for one year they represented to plaintiff, lessor, that they could not afford to pay so much rent; whereupon the lessor agreed to reduce the rent to $3,500 a year. Thereafter defendants paid the rent for three years at the reduced rate, and plaintiff delivered to them receipts for the amount paid, according to the oral agreement. The action was to recover the alleged balance of $1,000 per year, rent for the three years. The court held that the oral modification of the written ■ lease was fully executed when rent at the reduced rate was paid, and that defendants were entitled to prove such facts by way of defense, but that the oral contract was not binding as to any period during which reduced rent remained unpaid, for the reason that payment was necessary to constitute an executed oral modification of the written lease.
Suppose, in the transaction under consideration in this case, defendant had in fact paid plaintiff the cash commission of $1,600 on the Phillip sale, but had refused to pay the commission of $1 per acre on the Baker sale, and this action was to recover the commission of $640 on the latter sale, in such case defendant could not plead that he had paid plaintiff $i,6oo, an amount in excess of the commissions on both sales, and was not therefore indebted to him. It would be plain in such case that the oral contract to pay the commission of $1,600, having been fully executed by payment, would be binding- alike on both parties, and the sum so paid could not be pleaded in satisfaction of the claim for commission on the Baker sale. We are clearly of opinion the court was in error in directing a verdict for the amount of the commission claimed on the second cause- of action at the rate of $2.50 per acre, instead of at the rate ®f $1 specified in the written contract of agency.
For that reason alone, the judgment and order of the trial court are reversed, and the cause remanded for further proceedings according to law.