Defendant Edgar executed the following: “Order and Agreement. Mpls. Minn. 7-19, 1912. To the Gas Traction Company, Minneapolis, Minnesota. Ship to the undersigned, at the railway station at McEaughlin So. Dak. cjo Hains Hdw. Co. as soon as possible on-day of--, 1912 or as soon thereafter as practicable, one of your Big Four 30 HP gas traction engines with all fixtures and equipment usually furnished with same, upon the following terms and conditions: * * * And if the undersigned is satisfied from such trial that said engine will perform all the conditions hereinbefore stated, that the undersigned will, at the expiration of such three days trial, purchase said engine, fixtures and equipment and pay therefor the sum of 3350.00 as follows $- in cash and the balance in the promissory notes of the undersigned dated on the day of such purchase, payable to the order of the Gas Traction Co., with ■interest from date at the rate of eight per cent, per annum as follows: One note for $500.00 due on or before Nov. 15, 1912. One note for $950 due on or before July 15, 1913. One note ■for $950.00 due on or before Nov. 15, 1913. One note for $950.00 due on or before July 15, 1914, each and all of said promissory notes to be secured by -a first mortgage on said gas traction engine, fixtures and equipment and also by indorsement of J. W. Harris on note, of Mobridge, S. Dak. c|o Mbbridge State Bank. This order written subject to approval of J. W. Harris. If said engine, fixtures and equipment are not so purchased, the undersigned agrees within two days -after the expiration of such three days of trial to return the same to said railway station; and said undersigned further agrees that his failure to so return said engine, fixtures and -equipment within two days1 after said thi;ee days of trial, shall be an acceptance and purchase of said engine, *142fixtures and equipment by the -undersigned at the price and upon the terms and conditions hereinbefore stated. * * * It is further agreed -that this order and agreement is given and accepted and the sale and purchase of said engine, fixtures, and equipment are made upon the express condition that this order and agreement contains all the terms and conditions of the sale and’purchase of said engine, fixtures and equipment and cannot -in any manner be changed, altered, varied or modified without the written consent of an officer of said Gas Traction Company; * * * and that this order and agreement is not to be binding upon the Gas Traction Company until approved by said -company by an officer thereof signing the same. J. W. Edgar.’
Defendant Harris- sent the following telegram on July ■ 20, 1912:
“Mob-ridge, S. D. July 20, 1912. Gas Traction Co. M-pls. I will . approve of Edgar order provided- you reduce nineteen thirteen pajmients to six hundred each and making balance due in two payments nineteen fourteen July and November and that engine be loaded' right out. Wire answer if accepted and when engine will be loaded. J. W. Harris.”
On July 22, 1912, he sent another telegram as follows:
“Dated Mob-ridge, S. D. 22 To- Gas Tra-ction Co. Please wire answer my message July twentieth. J. W. Harris.”
On July 22, 1912, the Gas Traction Company received the following telegram: -
“Dated Morristown, S. D. 22 To Gas Traction Co. Ship engine as per Edgar o-rder. I will Guarantee.' J. W. Harris.”
[t] Defendant Harris denied having sent this' and it was erroneously received in evidence because no proper’ -foundation had been laid. On July 29, 1912, the above-written order and agreement was approved by the Gas Traction Company, and the engine was sent to Edgar. On August 5, 1912, the defendants Edgar and Harris executed and delivered to- the Gas Traction Company their promissory notes- in conformity with said agreement, and defendant Edgar executed a -chattel' mortgage on the engine. No’objection ’was made that the engine -did hot comply with the terms of the warranty. Action was brought upon- the notes for ’$500'due November'15, 1912, and $950 due’July 15, 1913, by plaintiff as assignee of the notes.- The -defendants were *143permitted1 to introduce testimony tending to show that the occasion for the notes was an agreement by defendant Edgar to transfer to'the Gas Traction Company a patent for a three-speed gear device for use on gas engines when Edgar should have obtained a patent, application for which had been made, and -that the giving of the notes and mortgage was merely as security that the patent ■would be transferred to the Gas Traction Company, when obtained. The verdict of the jury was for defendants. From, the judgment entered thereon and from an order denying a new trial, plaintiff appeals.
The principal error relied upon, and the only one we deem important -for consideration, is the admission of the evidence last above referred to. It is the contention of appellant that such evidence tended to vary the terms of a written contract and was therefore wholly inadmissible. Respondent contends that this case comes under the rule that it is .competent to show that the written agreement never became operative, and that its obligation never commenced, citing Jones, Ev. § 439.
[2] We are of the opinion that, so far as defendant Edgar is concerned, such rule is inapplicable to the present case for the reason that the order recites:
“It is further agreed that this order and agreement is given and accepted and the sale and purchase of said engine, fixtures, and equipment are made upon the express condition that this order and agreement contains all the terms and conditions of the sale and purchase of said engine, fixtures and equipment.”
To apply such rule would, as to defendant Edgar, violate the terms and conditions of a written contract because it clearly appears that the parties did “intend the document to be a complete and final statement of the whole of the transaction between them.” Jones, Ev. § 439. We are of the opinion that, as to defendant Edgar, the court erred in receiving evidence as to the patent right matter, and that a verdict should 'have been directed for plaintiff as against Edgar.
[3] Evidence that defendant Harris was induced to sign the notes upon the faith of such alleged collateral oral agreement might have been admissible so far as he was concerned, it not being shown that he agreed to the order, but the trial court admitted a lot of evidence that would not be competent even as *144to him. The ease was tried in the circuit court and also presented here on the theory that the evidence alluded to* was admissible as to both defendants. We deem it reasonably clear that such rulings were prejudicial to the rights of plaintiff, not only as against defendant Edgar, but also as against defendant Harris, The judgment and order appealed from are reversed, and the cause remanded for a new trial.