Ladd, J.
The plaintiff, on the twenty-second day of January, 1886, entered into an agreement “to lease to C. W. Robison their sawmill property, which includes all their real estate and personal property, now in use in the mill and on the premises, which includes all structures now on the premises, and machines and tools now in use in and around *50said structures, and also all horses and wagons, harness, carts,” etc., “now used by the Dubuque Lumber Co'.,” beginning January 25, 1886, and to continue five years. Robison agreed to make certain investments, and all personal property furnished by him, if in existence, was to be returned to him; The rental stipulated was an equal division of profits, payable after making a complete inventory, January 1st of each year. On the last named date there was another contract in these words:
“The Dubuque Lumber Co. furnishes C. W. Robison:
4 horses valued at.......................................... $350 00
3 good wagons valued at................................... 150 00
5 old “ “ “................................... 100 00
3 four-wheeled carts at ..............'.................... 100 00
3 two-wheeled carts at...................................... 50 00
2 sleds at................................................... 25 00
2 sets harness and cart harness.............................. 50 00
8825 00
—The same to be used in the business for the joint benefit of D. L. Co-. and C. W. R., and similar property in value to be returned at the end of 'this lease, at the joint expense of the parties, in five years from this date.”
The plaintiff alleged that none of the property set out in the contract of January 25, 1886, save two horses, worth seventy-five dollars; three.wagons, worth sixty dollars; and two sleds, worth twenty-five dollars, had been returned by Robison at the expiration of the lease, and asked that. its claim for one-ha.lf of the balance, with interest, be allowed. The executors insisted that this property was the same as that included in the lease, and that the contract of January 25, 1886, was merely supplemental thereto.
*511 2 *50If included in the lease, it was fully settled by an indorsement, thereon August 5, 1891, in words: “This contract is this day and hereby settled 'and discharged, so far as all its provisions are concerned,” followed by a stipulation for the division of property, and that “all wagons, carts, *51trucks, horses, and other personal property furnished by the Dubuque Lumber Co. at the commencement of the lease of January, 1886, shall be returned to the Dubuque Lumber Co., if in existence, and the same, if furnished by Bobison, shall be returned to him, as provided for in the lease.” It will be observed that the lease covered all property “now used by the Dubuque Lumber Co.,” but made no provision with respect to its disposition at the termination of that instrument, and that the contract required “similar property in value to be returned at the end of this lease, at the joinr, expense of the parties.” There was evidence tending to show that the horses and articles were used by the plaintiff at the time the lease was executed, and for this reason the court erred in not submitting to the jury the question as to whether the chattels described in the contract were those referred to in the lease. If they were, the settlement of August 5, 1891, was final. There was also manifest error in directing the jury to allow “one half of the value fixed in the contract of January 25, 1886, herein referred to, as the second item of said lumber company’s claim, after first deducting therefrom two horses and three cows.” Of course, value, and not property, was to be deducted, and the jury should have been advised to fix that at the time the property was returned. Again, the petition admitted the return of two sleds, valued at twenty-five dollars, and this should have been deducted. Possibly these errors would have been obviated had the condition that similar property in value was to be returned at the end of five years and the admissions been called to the jury’s attention in the statement of the issues or elsewhere in the instructions, but that was not done. Notwithstanding the executor’s statement that “all said articles, excepting 2 or 3 horses and a part of 2 old wagons, were used up, and became worthless,” the plaintiff ought not to be allowed more than it claimed. The evidence showed other of the articles and their value, left on the premises, but as to these no issue was presented.
*523 II. In the settlement of August 5, 1891, it was agreed “that wood and sawdust of the last year’s sawing, equal in value to that received by Robison of the Dubuque Lumber Oo., January 25, 1886, shall be left on the premises.” Under subsequent leases he held this property until January 1, 1892, though the mill closed in October or November of that year. Interest on the difference in the value of the wood received and that left should have been computed from January 1, 1892, and not January 25, 1891, as directed.
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5 III. On March 16, 1891, in a lease of the planing mill, Robison agreed to pay, as rent, “five dollars per day for each working day that the mill is actually in operation,” from January 25th to July 25th of that year. After its-expiration he held over till August 20, 1891, and from then on, under another agreement, till January 1, 1892, “at the rate of two and 50-100 dollars per day for every full day during said time that the mill is in actual operation.” The settlement of August 5, 1891, did not purport to include any rent due under these circumstances. The lessee holding over, however, occupied the premises under the terms of the last lease, in so far as applicable, and the plaintiff was entitled to recover the rental stipulated in the lease of March 16, 1891, from its expiration to August 20th of that year, rather than the reasonable value of the use of the premises, as the court instructed. Bank v. Herron, 111 Iowa, 25. The amended petition is based on the claim- for rent filed in the sum of three hundred and thirty-five dollars and forty-two cents up to January 25, 1891, and subsequently two hundred and thirty-two dollars and twenty-five cents, less an item of thirteen dollars and seventy cents, leaving two hundred and eighteen dollars' and .ninety-five cents from) .then till January 1, 1892. Interest was included in making the total of six hundred and fifty-two dollars and sixty-two cents. The tenth instruction permitted recovery for this entire amount,' with interest from *53January 1, 1892. The jury should have been directed to have allowed whatever was owing on the lease for rent on the lease of March 16, 1891, not exceeding three hundred and thirty-two dollars and forty-two cents, with interest added from July 25, 1891, and, whatever was owing for rent from that time to January 1, 1892, .not, exceeding two. hundred and eighteen dollars and ninety-five cents, with interest added from the latter date.
6 IV. The evidence established Moore’s competency to testify. While he had been an officer of and a stockholder in the Dubuque Lumber Company for many years, it appeared that he had transferred all interest therein and resigned as such officer before the trial, and, besides, that the company had long been insolvent and its stock worthless. We have held the interest which will prevent a person from testifying, under section 4604 of the Code, “means such an interest in the event as would at common law disqualify a witness.” Goddard v. Leffingwell, 40 Iowa, 249; Zerbe v. Reigart, 42 Iowa, 232. Where the interest is collateral merely, the competency of a witness may be restored by the release or transfer of it at any time before testifying, though this be done for that express purpose. Heft v. Ogle, 127 Pa. Sup,. 244 (18 Atl. Rep. 19); Insurance Co. v Crane, 16 Md. 260 (77 Am. Dec. 293); Insurance Co. v. Caldwell, 3 Wend. 301; Stall v. Bank, 18 Wend. 466; Railroad Co. v. Irick, 23 N. J. Law, 320. The rule is thus stated by Black, J., in Com. v. Ohio & P. R. Co., 1 Grant, Cas. 329 (see Heft v. Ogle, supra): “When the interest oí the witness is collateral, his competency may be restored by a release or transfer of it. The rule in Post v. Avery, 5 W. & S. 509, applies only to persons who have assigned choses in action on which the recovery would have been for their own use, if no assignments had been made: Its object is to prevent a. party from transferring himself into a witness by the magic of a bit of paper. It forbids one who assigns a claim to, sell his oath along with *54it. But a person who has a merely incidental interest in the result — an interest which arises entirely out of the fact thai the record ‘may be evidence for or against him in some other action — may devest himself of such interest, and, if he does so at any timje before he is offered as a witness, his testimony must be received.. For instance, a stockholder in a corporation may transfer his stock and become a witness for the company.” Darragh v. Biggen, 183 Pa. Sup. 397 (39 Atl. Rep. 37), was determined under the provisions of a statute of that state, and is not in point.
7 Y. Regardless of whether an amendment may be filed, after the statutory period for presenting claims, the refusal to permit plaintiff to so amend its petition as to enlarge the amount sought to be recovered on each item, after the lapse of three years, and just before the case was submitted to the jury, involved no' abuse of discretion. No issue as to plaintiff’s right to prosecute the action was .made in the pleadings, nor was the sufficiency of the petition raised by motion in arrest of judgment. For this reason we shall not consider the question at this time. Other errors assigned require no attention.; — Reversed.