Dr. Maurice H. Richardson '73 will deliver a lecture on, "the Diagnosis and Prognosis of Surgical Affections, with Special Reference to their Early Detection and Treatment," at the Medical School, Longwood avenue, Boston, this evening at 8 o'clock. Tomorrow afternoon at 4 o'clock, Dr. James G. Mumford '85 will lecture on, "Progress in the Treatment of Cancer." These lectures form a part of a course of free lectures offered by the Faculty of Medicine. They are open to the public, no tickets being required.