Dr. Robert Battey Greenough '92 will talk in the Living Room of the Union on "The Work of the Ambulance Department in France," tomorrow evening. Dr. Greenough's lecture will be illustrated by lantern slides. As executive officer and surgeon he served in France from April first to July first of this year with the Unit and he brings home vivid stories of the war. Dr. Greenough's pictures illustrate the work of the ambulance corps and the surgical department and in his talk the stages wounded soldiers go through from the scene of battle to the hospital wards will be described interestingly. The Harvard Unit in action will be illustrated as will also the ambulances which the undergraduates donated last year for the Units' use. Dr. Greenough has written several articles on his work and tomorrow evening will offer an unusual opportunity for members of the Union to hear a vivid report of work behind the French lines.