Opinion by
Mb. Justice McCollum,The appellee was severely injured on the night of the 15th of September, 1890, by falling into an open area-way on South Sixth street in the city of Reading. He claims that the injury he received was the result of the city’s negligence in the care of its streets, and he brought this action to recover the damages he sustained in consequence of it. The area-way was in front of Harugari Hall in which Thomas Tracy kept a saloon. It was four feet and nine inches in width and extended from the building line into the street five feet and six inches. It was an opening into which persons passing along the sidewalk, or to and from the building in the night-time, might accidentally fall, without any fault on their part. The jury found, on sufficient evidence and under instructions which are not assailed, that this opening was insufficiently guarded, and a dangerous obstruction in the highway and that there was no negligence of the appellee contributing to the accident.
The specifications relate to rulings on offers of testimony. The first alleges error in the rejection of the .appellant’s offei to show that it was usual and customary, and necessary for the convenient use and enjoyment of dwelling-houses, in the city of Reading, to have underground entrances into them, and that the house occupied by Tracy was of that character. The objection to this offer was that it was not a defence to the action, or relevant to the issue, to show that the city was accustomed to allow other similar and dangerous obstructions in its streets. It is undoubtedly true that no usage or custom will justify an encroachment on a public highway, or the presence therein of an obstruction which renders it unsafe for the uses to which it is dedicated. An unguarded opening like that into which the appellee fell, is, if located in a much frequented street, a public nuisance, and neither lapse of time nor the ex*615istence of like nuisances elsewhere, with the consent of the municipality, will legalize it: Beatty v. Gilmore, 16 Pa. 463 ; Bacon v. City of Boston, 3 Cush. 174, and Temperance Hall Association of Trenton v. Giles, 33 N. J. L. 260. Besides it will be noticed that the rejected offer did not propose to show that the underground entrances to other houses in Reading were located in the public streets, or were constructed and guarded like the area-way in question.
It is claimed however that the offer was made on the authoritjr of King v. Thompson et ux., 87 Pa. 365, and is sustained by it. It was decided in that case that an opening in front of a cellar window such as was usual and customary in the city of Allegheny for lighting and ventilating cellars and reasonably necessary for that purpose, was not per se a nuisance. The opening was about fifteen inches in width, three feet in length, and projected from the wall of the house about sixteen inches. An opening of this description is wholly unlike the opening exhibited by the evidence in this case. In view of its size and surroundings this court said of it “it is really difficult to see how the plaintiff succeeded in getting into the hole.” We think King v. Thompson, supra, does not sustain the offer embraced in the first specification and that no error was committed in its rejection.
The ordinance of January 5, 1889, was admitted under objection. It was an act of the municipality and in effect a declaration by it that the public safety required that openings in pavements should be properly guarded. It related to a subject under investigation in the case, and the general rule that the acts and declarations of parties concerning a matter involved in the suit are admissible, applies. Besides, it was an ordinance to enforce the performance of a common-la.w duty, and as such it was properly admitted: Phila. & Reading R. R. Co. v. Ervin, 89 Pa. 71.
It is apparent that Boyer was an unwilling witness and that his evidence was a surprise to the appellee who called him to the stand. It was proper therefore for the learned trial judge, in the exercise of the sound discretion which the law allows him in such cases, to permit a cross-examination of the witness by the party calling him, to show that his previous statements and conduct were at variance with his testimony. This exam*616ination “ is not substantive evidence of itself but is permitted to neutralize the evidence given by the witness: ” Bank of Northern Liberties v. Davis, 6 W. & S. 285. An appellate court will not interfere with it unless clear and injurious error appears. In the examination as conducted in this case we fail to discover anything which calls for a reversal of the judgment.
It is claimed that it was error to allow Warren 0. Spencer to testify that the area-way was a dangerous place. No case is cited to support this claim and there is no suggestion in the objections or the argument that the case is not a proper one for evidence of this character. The contention on this point seems to be that the examination which the witness made of the premises in question was not sufficient to qualify him to give the testimony objected to. To this we cannot agree. It sufficiently appears that he was possessed of the requisite knowledge to enable him to speak intelligently on the subject in reference to which he was interrogated. In this case, as in Beatty v. Gilmore, supra, “ it is not clear that the mere description of the place would convey to the jury an adequate idea of it with reference to the danger,” and it was therefore proper to allow the witness to supplement his description by his opinion founded on his actual observation of it: Graham et al. v. Pa. Co., 139 Pa. 149.
The specifications are overruled. Judgment affirmed.