Opinion by
Mr. Justice Frazer,Plaintiff sued defendants, property owners on South avenue in the Borough of Wilkiusburg, to recover damages for personal injuries sustained by reason of a defect in the sidewalk in front of defendants’ premises. The case was submitted to the jury in a fair and adequate charge, of which no complaint Is made, and a verdict rendered for plaintiff. Defendants appealed. The single question raised is whether the court erred in not holding, as matter of law, that plaintiff was guilty of contributory negligence.
In front of defendants’ property between the paved portion of the sidewalk and the curb stands a shade tree, the roots of which had by gradual growth raised the outer edge of the flagstone pavement to a height of from four to six inches above the surface, causing the flagstone to break near the middle of the pavement and produce a depression due to the elevation of the outer edge of the stone. On the evening of March 2,1914, between 5 and 5: 30 o’clock, plaintiff, in passing along the sidewalk at this point, struck her foot against the raised end of the flagstone, so that she tripped and fell, with the result that she sustained the injuries for which this action was brought to recover compensation. At the time of the accident “it was almost dark,” snow was falling and nearly two inches of newly fallen snow covered the ground. Plaintiff testified she was looking in front of her for a distance of from four to six feet, walking with ordinary care and did not see the defect in the *421sidewalk until she had fallen, and, while still on the ground, discovered the cause of her accident.
In view of this testimony plaintiff fully met the burden resting upon her to show conditions outside of herself which prevented her from noticing the defect, or excused her failure to observe it, within the rule laid down in Lerner v. Philadelphia, 221 Pa. 294; the question of her contributory negligence consequently was for the jury.
The uncertain light, the falling snow, and the snow at the time covering the ground, all tended to serve as a reasonable excuse for plaintiff’s failure to observe the condition of the walk, and whether she was exercising such care and caution as the law requires of her was for the jury: Bruch v. Philadelphia, 181 Pa. 588; Llewellyn v. Wilkes-Barre, 254 Pa. 196.
The judgment is affirmed.