275 N.W. 381 MARIE T. HACK v. WILLIAM JOHNSON AND ANOTHER.[1] No. 31,169.Supreme Court of Minnesota. October 8, 1937. [1] Reported in 275 N.W. 381. Negligence — contributory — when question becomes one of law. 1. The rule that it is only in the clearest of cases, where the facts are undisputed, that the question […]