12 A.2d 299 Nelson v. Duquesne Light Company et al., Appellants, et al. Supreme Court of Pennsylvania.October 4, 1939. March 27, 1940. Negligence — Municipal corporations — Highways — Obstructions — Poles — Proximate cause — Intervening negligence — Superseding cause — Restatement, Torts — Act of May 8, 1889, P. L. 136. 1. Municipalities […]