In Gen. St. e. 66, § 80, subd. 1, describing one class of causes of action that may be the subject of ■counterclaim, the clause, “or connected with the subject of the action,” is very indefinite. But we think the statute allowing counterclaims, being a remedial statute, should be construed liberally, and thus construing the clause in question, a cause of action in a tenant against his landlord, for wrongfully interfering with his enjoyment of premises rented, is connected with the subject of the action, when he is sued •by the landlord for rent for a period including that of such interference, sufficiently to make it a counterclaim.
If, as the jury might have found from the evidence, the plaintiffs stipulated, in the contract of leasing, for the right •to enter and make repairs only during the months of June •and July, the stipulation would not justify them in entering at any other time, and an entry at any other-time would stand as though no right to enter were reserved. Without any agreement on the subject, the fact that the repairs were necessary, from the unsafe condition of the wall, would not justify plaintiffs in entering to make them, though it might relieve them from liability to punitive damages.
The most important question concerns the rule of damages upon the counterclaim, if it is established. Defendants’ right to recover the actual damage to stock, for loss of rent •of the room above, and for what they necessarily expended *256in restoring the room-, sign and awning to their former condition, cannot be questioned.
The right to deduct the entire rent of the building during the period of interruption cannot be allowed; for, although, the act of the plaintiffs may have been such as to give defendants a right to treat it as an eviction, they did not choose so to treat it, but remained in possession, and had some use* more or less beneficial to them, of the building. They get. some benefit from their tenancy when they are allowed for loss of rent of the room above. If no damages are claimed, for injury to the business, but only for interference with the use of the store, and for loss of time of defendants and their employes, defendants must show to what extent they lost the use of the store, and the time of themselves and employes, and to that extent only can they in such case recover for these items. On the other hand, if damages are claimed on the basis of injury to the value of the business, then loss; of use of the store, and of the time of defendants and their employes, are improper as distinct items of damage, for they are included in the estimation of injury to the value of the.business.
When a regular and established business, the value of which, may be ascertained, has been wrongfully interrupted, the true? general rule for compensating the party injured is to ascertain how much less valuable the business was by reason of the interruption, and allow that as damages. This gives him only what the wrongful act deprived him of. The value of such a business depends mainly on the ordinary profits derived from it. Such value cannot be ascertained without showing what the usual profits are; nor are the ordinary profits incident to such a business contingent or speculative, in the sense-that excludes profits from consideration as an element of damages. What they would have been, in the ordinary course of the business, for a period during which it was interrupted* may be shown with reasonable certainty. What effect extra*257ordinary circumstances -would ■ have had upon the business might be contingent and conjectural, and any profits anticipated from such causes would be obnoxious to the objection, 'that they are merely speculative; but a history of the business, for a reasonable time prior to a period of interruption, would enable the jury to determine how much would be done under ordinary circumstances, and in the usual course, during the given period; and the usual rate of profit being shown, of course the aggregate becomes only a matter of calculation. The case is analogous to those of injury to the person, where the person injured is rendered incapable of earning what he would otherwise have earned. In such cases compensation for earnings lost is a proper element of damages, although it is impossible to show with absolute certainty that the person would have had employment during the period of incapacity, or earned so much as he did before.
In Simmer v. City of St Paul, 23 Minn. 408, cited by plaintiffs as deciding this point, the wrong consisted in interrupting the plaintiff’s business. The demurrer to the complaint, was sustained here, on the ground that the complaint did not. show that the business was or would have been of any value. It was alleged that the plaintiff was deprived of the gains and profits he would otherwise have.made and received; but the-character of such expected gains and profits, whether such as might be taken into account in arriving at the value of the business, or only such as were merely anticipated and conjectural, did not appear, and so this court held that while under proper pleading it would be competent for the plaintiff to show what the business was worth, the allegations in the complaint were not sufficient to that end. The opinion contains some-language from which it is assumed the court held that in no-case can gains or profits be taken into account in determining the damage done by destruction of a business. But that, language must be understood with reference to the indefinite and undeseribed gains and profits mentioned in that complaint.
*258In this case, to show what profits were lost to the business during the period of interruption, the defendants showed their monthly sales from the commencement of their business, about twenty-one months before the interruption, down to several months after it, and, also, the usual percentage of net profits on sales in that trade. This was proper evidence; but that was not the only mode by which the desired facts could be ascertained. It was proper for either party to prove the total capital put into the business prior to the commencement of the interruption, the amount drawn out, the debts of the business then outstanding, the value of the stock and amount of credits then on hand, and the expenses of the business. From these items the jury could determine whether the business, as conducted by defendants, was a gaining or losing business, and the extent of the loss or gain.
When we come to consider the objection that the evidence does not justify the verdict, we find the case to be this: The interruption commenced September 18th, and continued to October 20th, a period of thirty-three days, or thirteen days of the thirty in September, and twenty of the thirty-one in October. The business was not entirely suspended; some business appears to have been done through the whole time. The evidence shows the amount of sales for each of the months, September and October, but does not show the sales during the thirty-three days. Without such evidence there are no reliable data from which the jury could determine how much less the sales were for that period.than they would have been, had there been no interruption. For this reason there must -be a new trial.
Order reversed, and new trial ordered.