171 A. 478 KECK v. PHILADELPHIA RAPID TRANSIT COMPANY, APPELLANT, et al. Supreme Court of Pennsylvania.January 24, 1934. March 19, 1934. Negligence — Evidence — Incontrovertible physical facts — Applicability only in clear cases — Collision between trolley and automobile — Derailment of trolley — Direction of automobile after accident — Places of damage to […]