The evidence shows that, under the contract between Bust and plaintiff, the latter agreed to loan or advance to Bust such sums as he would be obliged to pay to his subagents in excess of the first year’s commissions. The advances made to Loomis by the company were made under this stipulation. The bond in suit contained several stipulations which are deemed material to this litigation. One was that Loomis should well and truly pay over all moneys that should come to his hands, “as also all moneys which he now owes or hereafter may owe said David H. Bust, or which he may be liable to said David H. Bust on account of loans or advances made to said Edward A. Loomis, Jr., during the continuance of the present agency of said Edward A. Loomis, Jr., or amry fui/wre agency.” Again: “It being understood and agreed that this obligation shall not be annulled or revoked without the consent of the said David H. Bust, but shall be and remain in force as long as said Edward A. Loomis, Jr., shall continue to be the agent of the said David H. Bust, whether under this existing appointment or any future one.” The last condition in the bond, and the most important, as affecting the rights of the parties, is as follows: “It being also understood and agreed that the right of said David H. Bust to bring suit on this bond, for any breach *21thereof, in bis own name, shall be subject to the paramount right of the said New York Life Insurance Company, should it so elect, prior to action brought by said David H. Rust or his executors, administrators, or assigns, to demand of said Edward A. Loomis, Jr., all moneys due from him under this agreement with said David H. Rust, or by this bond; and on the failure of said Edward A. Loomis, Jr., to comply with said demand, the said company shall have the right to sue upon this bond for that or any other breach assigned.”

The main question for consideration is as to the rights of the plaintiff under this bond and the situation as presented in the findings. It may be assumed as a verity in the case that Loomis is indebted on the bond as found by the referee, and the defendants are liable to some one, unless the contention of the defendants, that they are not sureties for the second contract between Rust and Loomis, made subsequent to the execution of the bond, be admitted. The claims of defendants in this regard may be easily settled by reference to the bond itself. The provisions quoted indicate, beyond the possibility of argument, that their undertaking was intended to, and did, cover the existing appointment of Loomis as agent, “ or any future agency,” and that they bound themselves to repay to Rust, on default of Loomis to do so, all loans or money advanced under the terms of the agency agreement then pending or any future agreement. This view is emphasized by the further stipulation that the bond should not be annulled without Rust’s consent, but should remain in full force so long as Loomis should continue to act as such agent, “whether under this existing appointment, or any future one.” The better and generally received opinion is that the contract of sureties is to be construed the same as any other contract, and that the same rules should bé applied to ascertain the true intention of the parties. Brandt, Suretyship & G-. § 92, and cases cited. "Where the language is plain and unambiguous, the contract must speak *22for itself. Construing tbe language in this bond, we have no difficulty in saying that tbe sureties are bound under both contracts, and tbis must be so under tbe most strict construction possible. It is so because it comes witbin tbe strict technical import of tbe bond.

Tbe right of tbe plaintiff to sue on tbis bond was denied by tbe circuit court because Loomis was never its agent and no right or interest in tbe bond bad ever been assigned or transferred to it, either by Bust, in bis lifetime, or bis ad-ministratrix. Concede that Loomis was never an agent of plaintiff, and that all tbe money advanced to him was charged to Bust; tbe fact remains that Bust has never repaid all tbe money so advanced, and that Loomis has never repaid Bust. We are bound to assume these facts to be true, because they are undisputed. It is also true that neither Bust nor bis administratrix has ever begun suit on this bond, and that plaintiff duly made demand upon Loomis before tbis suit was brought. Tbe situation then resolves itself into tbe simple construction of tbe legal effect of tbe last clause of tbe bond, before quoted. If tbe trial court’s construction was right, tbe judgment should be affirmed. If tbe referee’s estimate of its legal effect is correct, then tbe judgment must be reversed. It requires no delving among tbe books, or any serious demand upon one’s gray matter, to ascertain tbe intention of tbe parties. Bust bad agreed to make advances to Loomis. Tbe plaintiff bad agreed to make such advances to Bust for tbe benefit of bis subagents. They knew that tbe first year’s commissions might not be enough to pay expenses. Hence tbe matter of advances was put in tbe bond. Bust knew tbe money was to come from plaintiff, and be provided in tbe bond that bis right to bring suit on it for a breach by Loomis should be subject and subordinate to tbe paramount right of plaintiff to demand of Loomis all moneys due on tbe bond; and it was further agreed that, in default of payment by Loomis, tbe company should have *23a right to bring suit for tbe same. Can there be any question but that the plaintiff was beneficially interested in the money that might become due on this bond ? It seems to us not. The parties saw fit to contract that under certain conditions a beneficial interest in this bond should inure to the company. All of these conditions have been met and satisfied, and, under the evidence, the right of the company to enforce payment became absolute, without assignment or transfer by Rust or his administratrix. The fact that a portion of the money due the company from Rust had been paid by his bondsmen did not alter the situation. The payment of a part of the debt is no satisfaction of the whole. The circumstances in proof do not show that the payment by Rust’s sureties was an accord and satisfaction of the whole debt. After applying the payment so made, there yet remained a substantial balance due.'

We therefore hold that the situation here presented comes within the rule so frequently upheld and applied in this court, that where one person, for a valuable consideration, engages with another to do some act for the benefit of a third person, the latter may maintain an action upon such engagement, although not a party to it. Cotterill v. Stevens, 10 Wis. 422; Kimball v. Noyes, 17 Wis. 695; Putney v. Farnham, 27 Wis. 187; McDowell v. Laev, 35 Wis. 171; Bassett v. Hughes, 43 Wis. 319; Kollock v. Parcher, 52 Wis. 393; Grant v. Diebold S. & L. Co. 77 Wis. 72; Fulmer v. Wightman, 87 Wis. 573.

By the Gourt.— The judgment of the circuit court is reversed, and the cause is remanded with directions to enter judgment for the plaintiff upon the referee’s report.