510.240. In all other cases, if at any time during theprogress of any cause, it shall, in the opinion of the court,become necessary to determine any fact in controversy by theverdict of a jury, the court may direct an issue or issues to bemade.
(RSMo 1939 § 1121, A.L. 1943 p. 353 § 108)Prior revisions: 1929 § 970; 1919 § 1420; 1909 § 1990