Miss Mabel T. Boardman, of the executive committee of the American Red Cross Society will speak in the Parlor of Phillips Brooks House this evening at 7.45 o'clock. Miss Boardman's object in coming to Cambridge is to thank the students of the University for their contribution to the Red Cross Society, and to tell them in just what way the ambulances, which have been purchased from the proceeds of "Tag Day," will be used in working among the wounded.