delivered the opinion of the Court.

This suit was instituted by the appellee to recover dam*501ages for injury to his property and business, occasioned, it is alleged, by the careless conduct of the appellant.

The appellant was the owner of a building situate in the town of Lonaconing, two stories in height, and divided on the first floor into several rooms, with a large hall covering the entire upper floor. The appellee was the tenant of one of the lower rooms, which was used by him as a storeroom for the storage and sale of merchandize, such as is usually kept in a country store. His tenancy was from year to year, beginning from the first day of May, so that he was entitled to the possession and use of the premises until the first day of May, 1897. The flat tin roof that covered the building was supported in part by a line of posts running lengthwise the building, through the centre of the hall. In December, the appellant, with the view of making alterations in the building, removed these posts, and undertook to support the roof by means of iron bars running across the building. These bars were fastened on the outside of the building, and were in three pieces joined not by being welded, but hooked to each other by bent ends. On the sixth day of February snow having fallen and accumulated to the depth of several inches on the roof, the ends of the rods pulled apart under the pressure and precipitated large quantities of snow and water down upon the floor of the hall in the second floor, from whence water ran through into the room of the appellee, rendering it untenantable and greatly damaging his property. It is alleged .that all this damage was done to the appellee and his property by the careless and negligent weakening of the supports under the roof by the appellant.

The first exception presents a question of evidence. The appellee having presented himself as a witness, testified that immediately after the accident he and his neighbors went to work as fast as they could carrying out the goods and placing them in a store-room near by, and left them piled up wet on the floor, where they remained for three days, during which time he was occupied in attending the funeral of *502his wife’s mother in an adjoining State ; that on Tuesday (the accident having occurred the preceding Saturday) he examined the goods carefully and made a memorandum- Of each article and the extent to which it had been damaged. He produced the memorandum and was about to read from it, but the counsel for the appellant objected to the use of the paper, and also to the witness stating what the condition of the goods was when the examination of them was made. The Court overruled these objections and permitted the witness to testify as to the condition of the goods on Tuesday, and further ruled that the witness “ could not read the paper to the jury, and that it could not be used by the witness except for the purpose of refreshing his recollection, but that the witness might take the paper and refresh his recollection therefrom.” Having already testified that the entries upon the paper were made by himself, contemporaneously with the examination of the goods, it was proper for the witness to use the memoranda for the purpose of refreshing himself. And even if he was unable to recall each article independently of the paper, yet if he made it himself and knew it was correct when so made, he could so testify. Martin v. Good, 14 Md. 411; Green v. Caulk, 16 Md. 572.

The objection of the appellant, however, goes to the general admissibility of the evidence, upon the ground, that the goods having remained piled up in a wet condition from Saturday until Tuesday, a statement of the extent of the injury on the latter day would include not only the damage resulting from the accident, but also such as might be attributable to the negligence of the appellee in failing to take reasonable care of the goods. It was undoubtedly the duty of the appellee after the accident to avoid the consequences of the wrong of the appellant, as far as he reasonably could; and the Court very properly so instructed the jury by the plaintiff’s second prayer, as well as by the defendant’s second prayer. But whether the appellee exercised such reasonable care after the accident in averting the *503consequences of the accident, was a question for the jury, when they came to the assessment of the damages. Now evidence a? to the happening of the accident, and as to the appellees dealing with the injured property thereafter, allowing the wet goods to remain piled up on the floor since Saturday, had already gone to the jury. Under these circumstances, proof as to the condition of the goods on Tuesday was pertinent as tending to throw light upon the extent of the injury caused by the accident, and also as to whether the appellee dealt properly with the property thereafter.

After evidence as already stated, had been offered, the appellee was asked, “ how much profit he was making out of his business per month at the time of and prior to the accident, and how much after, up to the first of May,” to which he replied, “ he was making an average profit of seventy-five dollars per month from his business prior to the accident; and that for the first and second months thereafter he lost money, and the third month he was even.” To the ruling of the Court in permitting the question to be asked and the_ answer to go to the jury, the appellant reserved his second exception.

The purpose of the suit, as appears from the allegations of the narr., is to recover damages, first for injury to the appellee’s property, and secondly for that the premises were rendered “ unfit for occupancy,” whereby his business was broken up and he was compelled to rent another storeroom “ at a less profitable position in the town, at which he was able to do but little business.” At the time the evidence mentioned in the exception was offered there had been no proof as to the period during which the appellee was unavoidably prevented from occupying his premises. Even if this were not the case, it might have been possible, that the injury to his business had extended over the three months referred to by the witness; and if the jury so found the loss incident thereto would have constituted an element to be regarded by them in estimating the damages. The appellee was. entitled under the pleadings, if the proof was *504sufficient, to recover for all loss to his property and business as he unavoidably sustained by reason of the accident. It was therefore competent for him to show what the .profits of his business was before the accident (Shafer v. Wilson, 44 Md. 278) and if the business was not entirely broken up, he could show to what extent it had been injured.

We come now to the consideration of the instructions asked for respectively, by the parties. Two were presented by the appellee and granted; four by the appellant, of which the first and fourth were rejected, and the second and third granted.

The appellant’s first prayer asserted as a proposition of law, that he could not be held responsible for the accident if the jury found that he had “ employed an experienced and competent builder to make the alteration, and the alteration was made by said builder, without any negligence to the knowledge of the defendant.” His fourth prayer presents substantially the same proposition ; it denies the liability of the appellant, “ if he employed an experienced and competent builder to do the work who exercised ordinary care in the construction of the same.” The fourth prayer was specially excepted to, because there was no evidence that the appellant did employ a “ competent builder.” We think the special exception was properly taken. The proof is uncontradicted that the person so employed was not a builder but a blacksmith, who had never built a house. Such a person might be very competent to do the iron work that was required, but cannot be regarded as possessed of the qualifications needed by one who proposes to make alterations involving the stability of a building.

But both of the prayers were properly rejected for other reasons. The proof shows the appellant himself adopted the plan of alteration, and employed Conner, the blacksmith, to do the work. The latter being but the servant of the former, working under his control and direction, the master would be liable for the consequences of the servant’s neglect in executing the work. But this case goes *505farther than this. Here the appellee claims that the plan of the alteration was grossly insufficient. There was evidence before the jury that the cause of the accident was the improper methods of fastening the rods; being not welded together but only hooked by means of bent ends ; and that such appliances were unsafe for the purpose of supporting the roof. The question presented by this state of facts was so fully considered by this Court in the case of Deford v. The State use of Keyser, 30 Md. 204, that it becomes unnecessary to refer to any of the cases from other Courts. In Deford's case Mrs. Keyser was killed by the fall of Deford’s wall. The right of the plaintiffs to recover was rested on two grounds, viz: First, that the parties whose negligent acts produced the injury were Deford’s servants, and secondly, that Deford did not take due care to prevent the creation or erection of a nuisance on his ground, which it was his duty to have prevented whether the erection was by his servants or others. In discussing the last ground the Court said, “ In all cases where a party is in possession of fixed property, he must take care that it is so used and managed that other persons shall not be injured ; and whether it be managed by his own servants, or by contractors or their servants makes no difference in respect to his liability. ” And further on, citing from Hole v. S. & S. Ry. Co., 6 H. & N. 488, the Court proceeds, “it may be the same principle applies to cases where a man is employed by another to do an act, which it is the duty of the latter to do. In such cases it is the duty of the owner of the soil to inquire what is being done, to know what is the plan, to see that the materials are good, and to take care that no mischief ensues.” In the case at bar the appellant himself furnished the plan and employed a man to do the work, and it became his duty to take care that no mischief ensued.

The instructions granted by the Court by the first and second prayers of the appellee, and the second and third of the appellant, are in accordance with the views we have ex*506pressed, and fairly presented the case to the jury. Finding no error the judgment will be affirmed.

Judgment affirmed.