This plate elucidates the womb bent or turned backward and pressing on the rectum. This condition is generally traceable to the vicious custom of lying on the back after confinement or during childbed. The natural position of the organ, inclined forward and resting on the bladder, is also shown.] As a permanent pathological lesion, this form of displacement is very rare, but as a forerunner of retroflexion it is of frequent occurrence. The length of time that elapses for a version to take on a flexion depends on the degree of induration or stiffness of the uterine walls. The chronic inflammatory enlargement of the uterus predisposes the organ to posterior displacement, and the displacement favors the development of flexion. This takes place in the following order: After the uterus is displaced backwards, and its cervix has become fixed by inflammatory adhesions, the body of the womb gradually glides down on the posterior pelvic wall, from gravitation and intra-abdominal pressure. And in this very simple manner a retroversion is converted into a retroflexion. The causes, symptoms, and complications that characterize this variety of displacement, with its subsequent modification into flexion, are the same as those of retroflexion, to which the reader is referred. RETROFLEXION OF THE UTERUS. This form of uterine displacement exists when the body of the womb is bent towards the posterior wall of the pelvis, which is in an opposite direction to that where it naturally belongs. I have already pointed out, in speaking of the normal position of the uterus, that the body is directed forwards and rests on the bladder, while its cervix points downwards into the pelvic cavity. I now refer you to Plate IV, in which I plainly show the uterus in a directly opposite position to that in health, namely, turned back, resting on and depressing the rectum.