185 A. 581 Niziolek v. Wilkes-Barre Railway Corporation, Appellant. Supreme Court of Pennsylvania.April 13, 1936. May 25, 1936. Negligence — Evidence — Sufficiency — Presumption — Happening of accident — Conjecture — Collision between trolley car and pedestrian. 1. Negligence will not be presumed from the mere happening of the collision between the decedent and […]