delivered the opinion of the Court:

1. In this court a motion was made to dismiss the appeal of Mrs. Harriet S. Blaine and two other defendants who had been proceeded against by process of publication, on the ground that, inasmuch as no appearance had been entered for them, they had no right of appeal, their remedy being, as it was claimed, by a petition for a rehearing in the court below under the provisions of the Act of Maryland of 1773, Ch. 7, Sec. 4. This motion was postponed to the hearing on the merits, and now comes up for determination. We think that the act of Maryland, to which reference is made, is not at all applicable to this case, and that the motion is not well founded. But it is sufficient for us here to say, that the complainant company by its own appeal, which in terms is an appeal from the whole decree, has brought the whole case and all the parties into this court; and it would gain nothing by the allowance of its motion, even if it were otherwise well founded. The motion therefore must be denied.

2. Proceeding to a consideration of the case on its merits^ *120we are unable to find any ground upon which any decree in the premises against Mrs. Harriet S. Blaine can be sustained. The allegation of the bill of complaint that Albaugh and Painter acted as her agents is positively denied by them in their answers; and if the allegation is to be regarded as the assertion of a matter of fact, there being no testimony whatever in support of it and not even the .pretense of testimony, it must be regarded as conclusively -disproved by the answers. And if the statement is unfounded with regard to Albaugh and Painter, it can not be taken as true with regard to Mrs. Blaine,'notwithstanding the decree pro confesso against her. For it is too plain for argument that, if there were no agents, there could be no principal. The condition of agency is one which necessarily requires two parties to it. If, on the other hand, the allegation of the bill is intended to be the assertion merely of an inference of law from the relation of lessor and lessee, subsisting between Mrs. Blaine, on the one side, and Albaugh and Painter, on the other, and the covenant in the 'lease for the erection of a building by? the lessee to become the property of the lessor at the end of the lease, without .charge to her, the proposition is wholly untenable. The lease is not given in the record; and we may therefore presume that there is nothing that would aid the complainant’s contention other than the covenant which has been cited. But this covenant involves no theory of agency, but quite the reverse. The parties to the lease dealt with each other, not as principal and agent, but practically as adverse parties. To hold that a lessor, covenanting with a lessee for the security of his interest under the lease, the payment of ■rent, probably, should construct a building upon the land in place of one to be demolished, would thereby and by virtue of such a covenant make the lessee his agent and bind ■himself personally, as well as his property, for the contracts of the lessee in the performance of the covenant, seems to us ,to be wholly without warrant either in law or in reason; *121and we greatly question whether even the most positive legislation could impose liability upon one person for the obligations of another in such'a contingency. Certainly no such liability is imposed, or sought to be imposed, by our mechanics’ lien law. The covenant in question is itself evidence of the intention of all the parties that the lessor should not be bound; for it specifically provides that the building should be surrendered at the end of the lease without charge to the lessor, her heirs or assigns.

It is very clear to us that the decree, as against Mrs. Harriet S. Blaine, is erroneous in every aspect of it, and that as to her -the bill of complaint should have been dismissed. If there is any liability in the premises, it is only that of Albaugh and Painter in respect of the leasehold interest which they hold.

3. Whether the complainant’s lien takes precedence of the deed of trust executed in January of 1896, to the defendants, Johns and Porter, to secure the defendant, Euterpe Kinsbury, is a question that admits of grave doubt. The complainant company in October and November of 1895 claimed to have finished its work in the previous September as well as it could have been done under the circumstances. Albaugh and Painter appeared to the world to be in full possession in and after that month of September; and so far as this record shows, there were no workmen there thereafter before the execution of this trust, and there was reason for those dealing with the owners to assume that the work had been finished; and it is not shown that the trustees or beneficiary in the deed of trust had any knowledge of the supplemental contract of December 11, 1895, between the company and Albaugh and Painter. It may, therefore, be questioned whether the trustees and beneficiary in the deed of trust were not justified in dealing with the property, so far as the complainant company is concerned, on the assumption that it had been settled with, the three months allowed by the mechanics’ lien law for the filing of notice *122of lien having apparently expired. But, in the present condition of the case, it is probably unnecessary for us to determine this question; and we desire to be distinctly understood as not determining it in any manner, or precluding further inquiry into the facts, if such should be deemed necessary.

4. The main, and we may say, the substantial controversy in this case is between the complainant company, on the one side, and the defendants, Albaugh and Painter, on the other; and upon the issues between these parties we find ourselves constrained to come to a somewhat different conclusion from that reached by the learned justice who heard the cause in the court below.

The claim of the complainant is for $1,561.50; the decree allows $1,311.50. The difference is the result of a deduction of $250 based exclusively on the testimony of one of the witnesses for the complainant, who testified that in November, 1895, he had inspected the work for the company, that it was not then in first class condition, and that it would require about $250 to put it in first class condition. But all this was before the execution of the supplemental contract of December, 1895; and as, under that supplenaental contract, there was work by the company in the summer of 1896 to complete the work in accordance with the requirements of the original contract, and as it is claimed by the company that the work was then corhpleted, it is not apparent how an arbitrary sum of $250, applicable enough perhaps in the previous condition of the work, can be held to be equally applicable in the subsequent stage. If, after the work of the company’s employees in the summer of 1896, there was still deficiency either in the quantity or quality, the record is wholly without proof of the amount of it, or of the sum of money that would be necessary to supply the deficiency. It appears to us, therefore, that the deduction of the sum of $250 from the complainant’s demand is unwarranted. The proper deduction, if any, to be made may be more, or it may be less. What we hold is, *123that there is no testimony whatever to show what it should be. And in this view of the case, we think that the cross-appeal of the complainant, which is aimed at this deduction, should be sustained.

In the complainant’s claim of $1,561.50 there is included a charge of $406.50 for extra work, the remainder of the claim being for the work under the original contract. This charge of $406.50, being the aggregate amount of three several items, was included in the bill presented by the complainant to the architect on October 16,1895, and which was certified by the latter as correct, with the exception of one of three items, $36, which was disapproved and erased. Unless there is testimony to overcome this ruling of the architect, and we find no such testimony in the record, the claim for extra work must be reduced from $406.50 to $368.50. This extra work is referred to in the supplemental contract of December 11, 1895; and it is there stated that “the quantity of this work is still in dispute, and the ascertainment of exact quantities of such extra work is reserved for consideration between the parties at the time of final adjustment when contract work is entirely completed.” It does not appear what effort, or whether any effort, was made to ascertain this quantity; and, in view of the provisions of the supplemental contract, there should. have been some testimony on this point.

But these are minor details; the main controversy remains to be adjusted. Did the complainant company perform its work under the contract in accordance with the requirements of the contract ? If it did not, whose was the fault for the failure ? And if the work -was not performed in accordance with the requirements of the contract, what was the amount of the deficiency, and what is the proper amount to be deducted from the contract price on account of' such deficiency ? Unfortunately the testimony does not afford to us the means of answering these questions satisfactorily to ourselves. The testimony is mainly confined to *124the exposition of the circumstances and conditions that obtained during the summer and autumn of 1895, and to a manifestation of the bickerings and misunderstandings that then occurred between the parties. But all this, in our opinion, has been practically eliminated from the case by the action of the parties themselves in formulating the supplemental contract of December 11, 1895. This contract was a virtual condonation by each party of the shortcomings on the other side. It was an acknowledgment that there had been shortcomings on both sides, that the original contract had not been completed in accordance with its terms, that the amount of the extra work remained to be ascertained, that payments had not been punctually and properly made, and that there had been interruption of the work by improper interference on the part of the owners of the building. But it was then and there agreed that all the past should be condoned, that the company should thereafter be permitted to enter upon’ the work and complete it in accordance with the requirements of the contract, and that there should then be prompt payment for it. The previous misunderstandings were thereby eliminated; and we can not understand why, in view of this supplemental contract, which was intended to be an adjustment of the whole and entire difficulty, so much space should have been given in the testimony to the matters that happened before December, 1895. The important inquiry is, not what happened before December 11, 1895, but what happened after that date. Did the complainant company after that date make good its undertaking in that supplemental contract to complete the work in accordance with the requirements of the original contract? And if it did not, wherein and why did it fail to do so? And what was the extent of its failure, if any there was ? These are the ques-' tions to be determined; and upon these the testimony throws little or no light.

It would seem that on December 11,1895, the complainant *125company thought that it could remedy any existing defects in the work; for, by the supplemental contract of that date, it undertook to remedy all such defects by its agreement to complete the work in accordance with the terms of the original contract. It may be that there was defect of judgment in assuming that this could be done; but certainly there was the undertaking to do it. Now, it is quite evident that it was not done; for to that effect is not only the testimony on behalf of the defendants, but likewise the testimony of the complainants’ own witnesses. They all admit that the work was not of the first class, and content themselves with saying that it was done as well as could be under the circumstances. This may be correct; and it may be that there were defects in the- original work, occasioned possibly by undue interference on the part of the owners, which could not be remedied. But this leaves unexplained the undertaking of the company in the supplemental contract to make the work such as was contemplated by the original contract.

The testimony, we think, is wholly insufficient on which to base a decree. It is very evident to us that the complainant company is entitled to a recovery to some extent; but the amount of that recovery we are unable to determine; and greatly as we regret to subject the parties to further expense and delay in the matter, we are compelled to make such disposition of the case as will enable the court to come to a satisfactory determination of that amount. This may • be had either by reference of the cause to the auditor of the court, with authority to take further testimony, if need be; or by submission of the question to a jury by the formulation of issues under the "direction of the court, or by the institution of an independent suit.

It is our conclusion that the decree appealed from should be reversed, with costs to be equally apportioned between the complainant company, on the one part, and the defendants, Aibaugh and Painter, on the other; and that the cause should be remanded to the Supreme Court of the District of *126Columbia, with directions to dismiss the bill of complaint as to Mrs. Harriet S. Blaine; and with directions further, in the discretion of that court, either to refer the cause to the auditor of the court for a finding of facts by him upon the testimony in the cause and such other testimony as may be adduced before, him, or to have issues formulated by the parties for the determination of the facts by a jury, or to permit the parties, under the control and direction of the court, to institute an independent suit at common law for the determination of such facts; and for such further and other proceedings according to law, and not inconsistent with this opinion, as may be right and proper. '

And it is so ordered.