Appellant, as plaintiff below, sued appellee on April 25, 1922, in the justice court, on a written order signed by appellee, for a set of law books, entitled “Standard Encyclopedia of Procedure.” This order was dated May 23, 1916. The order called for delivery of the books as published at $6.50 per volume, all volumes in excess of 26 to be furnished free, and provided payment of $8 on September 1, 1916, and $3 per month for the remainder, with privilege of paying $9 each three months. Appellee defended on three grounds, as follows: First, that the order was procured through fraud; second, failure of- consideration; and, third, the *309 statutes of limitation. Appellant, by supplemental petition, pleaded waiver by appellee on any question of fraud or failure of consideration, and that appellee bad tolled tbe statute of limitation by a renewed written promise to pay in a letter to appellant, dated May 30, 1917, all of wbieb supplemental pleadings were properly excepted to and denied by appellee. Tbe ease was tried before tbe justice of tbe peace and judgment rendered for defendant. On appeal to tbe county court, it was tried before a special judge, tbe appellee being tbe regular county judge, and judgment again rendered for defendant. From tbis judgment plaintiff appeals.

Opinion.

Appellant only bas one assignment of error, wbieb is multiplicitous. In this assignment it sets up all tbe alleged errors of wbieb it complains, and under it sets out eight propositions. Only a part of these are propositions of law, and these so mixed with argument as to be difficult of ascertainment. Its brief does not comply with tbe rules, but we have, nevertheless, considered tbe salient points raised. There is an agreed statement of facts, but no findings of fact nor conclusions of law made by the trial court. Nor is it made to appear that any such were requested. Only one witness, tbe appellee, testified, all other evidence being documefitary.

We think appellee’s testimony clearly establishes bis pleas of fraud and limitation unless same were defeated by bis letter to appellant, dated May 30, 1917. Tbis letter as shown in the record, and omitting the parts not pertinent to our inquiry, contained tbe following language:

“I want to make you the proposition to pay you $25.00 and reship you the books, and I will pay freight on same. The books are in as good condition as when I opened them, for the reason that they are not suited to my practice and therefore have not been used.

“I am inclosing you my cheek for $10.00. If you will accept my proposition I will immediately send you the other $15.00. If you do not accept this, then I will pay you for the books as I can. At any rate do not ship me any more of the books, I cannot use them.”

It appears that when tbis letter was written appellee bad paid nothing on tbe books and that, due to failure to pay tbe installments called for in tbe order, tbe appellant bad exercised its option, provided for in tbe order, of declaring the full amount due, and bad demanded payment in full. Appellee testified that it was in response to threats to sue him made in letters of appellant that be wrote tbe letter above quoted from, and that such offer was made only as a compromise. Tbis is not denied nor contradicted by appellant. Tbe undisputed testimony shows that appellant did not ship any more books to appellee, that it kept the $10 sent, and that it sent tbe local expressman for tbe books to be reshipped to it. He declined to receive same from appellee because not properly boxed, but we think this immaterial. We think that there was sufficient evidence to authorize tbe trial court in finding that appellant accepted appellee’s offer of compromise and that it could not, therefore, sue upon tbe original contract. Tbis would sustain a judgment against appellant.

If tbe trial court did in fact find that tbe order sued upon was supplanted by a compromise between the parties on May 30,1917, inasmuch tbe suit was not filed until April 25, 1922, nearly five years later, we think be could also have found for tbe appellee on bis plea of limitation even as applied to tbe new agreement, which would also support bis judgment.

Appellant contends, however, that appellee’s letter was not a compromise offer, but a renewed promise to pay for the books, in tbe following language of bis letter: “If you do not accept tbis, then I will pay for the books as I can” — and urges that this defeats bis plea of limitation. In order for a new promise to pay to toll tbe statutes of limitation it must contain an unqualified admission of a just subsisting indebtedness and express a willingness to pay it. Krueger v. Krueger, 76 Tex. 178, 12 S. W. 1004, 7 L. R. A. 72. In tbe instant case, neither tbe amount of tbe debt nor that it is just appears to have been admitted by appellee in said letter, and bis promise to pay is expressly contingent upon his ability to pay. Being, to that extent at least, a conditional, promise to pay, tbe burden was cast upon the plaintiff, if it depended upon such new promise, to prove that appellee was in fact able to pay within such time as would stop the running of tbe statute of limitation against it. Lange v. Caruthers, 70 Tex. 718, 8 S. W. 604. A finding of tbe trial court against tbe appellant on tbis issue would likewise support a judgment against it.

Where the trial court files no findings of fact, tbe judgment must be sustained if there is testimony supporting any theory authorizing tbe judgment. McCoy v. Mayer (Tex. Civ. App.) 21 S. W. 1015; Spalding v. Aldridge, 50 Tex. Civ. App. 230, 110 S. W. 560; Daniel v. De Oritz (Tex. Civ. App.) 140 S. W. 486; Telegraph & Tel. Co. v. Thompson (Tex. Civ. App.) 142 S. W. 1000; Pennington v. Fleming (Tex. Civ. App.) 212 S. W. 303; Blewett v. Richardson Ind. School Dist. (Tex. Civ. App.) 230 S. W. 255; Head v. Moore (Tex. Civ. App.) 232 S. W. 362.

We have taken occasion in this opinion to set out some of tbe issues on which tbe trial court, under tbe evidence, could have found against tbe appellant. It is not tbe province of this court to pass upon the weight of testimony. There being evidence to support the *310 judgment of the trial court, in the absence of his findings of fact and conclusions of law, this court must affirm the judgment below.

Affirmed.