Four highly opinionated and differing authorities will discuss "Banning in Boston" tonight at the third Law Forum in the New Lecture Hall at 8 p.m.

Taking about the controversial subject will be Dwight S. Strong, executive secretary of the New England Watch and Ward Society; Elinor Hughes, drama critic of the Boston Herald; The Very Rev. Msgr. Francis J. Lally, editor of the Boston Pilot; and Gerald A. Berlin, Director of the Commission of Law and Social Justice of the New England Division of the American Jewish Congress.

Louis L. Jeffe, Byrne Professor of Administrative Law, will moderate.

Forum officials emphasized that the Forum will not be a debate this time, but a "discussion of a controversial topic."

Strong has defined the purpose of his organization as "to strengthen and make effective law enforcement in the field of gambling, narcotics, vice, and corruption."