ENDOMETRIOSIS is one of the more serious afflictions of modern woman. Striking in the home-building years from youth1 to menopause and often causing severe pain, childlessness and dyspareunia as well as intestinal and urinary lesions, the disease affects so many women (probably twice as many as appendicitis2) and its treatment is so unsatisfactory3 that it has become a challenge to modern medicine.
Several theories have been advanced which could explain its development, but there is little evidence that any one of them does, in fact, operate. This report submits evidence, from a study of where endometriosis occurs, to suggest how in some cases it does occur. The evidence is circumstantial and based on the assumption that if material is dropped onto the pelvic peritoneum (implant theory) simple gravity would be one of the agents influencing its distribution. Evidence of gravity influence is presented. No presently suggested mechanism