This bill was filed to enforce a lien for the price of a heating system furnished by appellant to appellee for appellee’s hotel building in the city of Sheffield. Defendant pleaded the statute of limitation of six months (section 4777 of the Code), and upon that plea complainant’s bill was dismissed.

Complainant’s contract' obligation ended with the delivery of the heating apparatus, which was to be installed by defendant. All parts — save one small item, to be noted hereafter- — were delivered to a carrier in March, 1918. Complainant contends that its account did not fall due until November, and its witness testifies, in general terms, that “the whole of the account became due and payable about November 1, 1918.” But in the same connection he says:

“There was no specific agreement relative to the date on which the account should be paid further than an understanding at the time of taking the order that the material would be paid for when it was connected up with the building.”

The invoice shows the price to have been $2,538, and that payment was expected at 80 days, and it appears without contradiction that on August 16, 1918, defendant on complainant’s request executed its promissory note for the amount stated above, payable 60 days after date, with J. W. Worthington as surety. This note is explained by complainant’s witness in this language:

“The building progressed very slowly — much slower than was anticipated — and about the middle of August, 1918, complainants thought their accounts for material should be paid without waiting until the completion of the building, and the Sheffield Realty Company then agreed that it would make payment for the goods already shipped on October 16, 1918. This was the only agreement made with reference to the maturity or accrual of the indebtedness for said material.”

This hill was filed Feburary 7, 1919, seeking a lien for the sum of $2,542.85.

In October, 1918, when that part of the installing process was reached, it was discovered that a flange — known as a “companion flange,” an indispensable.part of the rotary vacuum pump which was an essential part of the heating system — was missing, and to supply this flange, pirice $4.85, defendant gave and complainant tilled a new order, October 16, 1918, and upon the new order complainant seems to base its contention that materials were furnished on a single continuing contract which was not completed until October, and hence that its bill in this cause was filed, to quote the statute, “within six months after the maturity of the entire indebtedness.”

[1,2] Pretermití ing, for the moment, consideration of the effect of the order for the flange, we think, on the evidence in this record, that the apparatus furnished by complainant was to be paid for within 30 days of its delivery to- defendant (College Court Co. v. Letcher Lumber Co., 201 Ala. 361, 78 South. 217), which was effected by a delivery to the carrier. Complainant’s witness testifies to an “understanding,” but “understanding” is an ambiguous word and dubiously meets the necessities of a case which, in view of the invoice, called for proof of the terms of an agreement or contract to a different effect. Williams v. Railroad Co., 82 Miss. 659, 35 South. 169. Except upon the hypothesis that the apparatus was to be paid for 30 days after delivery, we cannot account for the invoice which contained these notations: “2% 10 days — 30 days net — f. -o. b. origin of shipment.” And at another place, “Terms *451 2% cash and 30 da net,” or the fact that the note with surety was asked and given in August, or the testimony of defendant’s witness tending to show that the contract was expressed in the invoice. Such being the case, the entire claim, in the absence of the note, would have matured prior to the date of the maturity of the note, and, necessarily, on the hypothesis on which we are now proceeding, acceptance of the note operated as a waiver of a lien under the statute. Hines v. Chicago Co., 115 Ala. 637, 22 South. 160.

[3, 4] We have no doubt whatever that the flange which has been mentioned was included among the parts of the pump, and so of the heating system the subject of the original contract between the parties. Its price therefore was included in the amount of the note. The parties appear not to have known, even when the testimony was taken, whether this flange was never shipped or whether it was lost after shipment. The competent evidence throws no light upon that question. If it was never shipped, appellant, complainant, is claiming a lien in excess of the agreed value of the goods first delivered by the amount of $4.85. If it was lost after delivery and reordered more than six months later, it cannot be contended with reason, in the circumstances we have stated, that it was the last item in one single continuing contract or that its order and shipment revived a contract which had before its order or shipment been merged in the note and which without the note would have been barred by the statute of limitation. Manifestly, the item of the flange ordered in October did not figure as a part of the original contract, for defendant did not need two flanges to perform the work of one; more than six months elapsed between the first contract and the ordering of the flange; and the authorities hold that, if there is an hiatus between the items sufficient to permit the filing of a lien, the presumption is that the items belong to separate contracts. Rockel on Mech. Liens, § 98.

We conclude therefore that the decree in the trial court was free from error.

Affirmed.