No. 21174. June 30, 1964. Rehearing Denied August 7, 1964. Otto B. Mullinax, Dallas, Tex., for appellant. Chester G. Ball, Jack E. Harris, Arlington, Tex., for appellee. Before HUTCHESON, PRETTYMAN and JONES, Circuit Judges. Of the District of Columbia Circuit, sitting by designation. PER CURIAM. This is a Texas diversity slip-and-fall case. The jury found unavoidable accident. Appellant, plaintiff below, complains, first, that there was insufficient evidence to submit the issue of unavoidable accident