John Kendrick Bangs will speak in the Union tomorrow evening at 8 o'clock. Mr. Bangs is well known for his humorous writings and at different times in his journalistic career has served on the staffs of many well known magazines, including Harper's Magazine, Harper's Weekly, Life, Puck, and the Metropolitan Magazine. Tomorrow evenings' lecture will be the fourth in the series of lectures and entertainments given by the Union to its members this season.