The various kinds of malformed pelves may be loosely classified as generally contracted or small; flat; simple funnel; generally contracted funnel; and the rachitic pelves, both flat and generally contracted. There may be a contracted inlet, or a contracted outlet, or both may occur in the same pelvis.[1] Rachitic pelves are common among negroes and not altogether rare among white women. The normal _male pelvis_ is deep, narrow, rough and massive as compared with the female structure (see Fig. 1.), and the angle of the pubic arch, formed by the two pubic bones, is deeper and more acute in the male than in the female skeleton. The normal female pelvis, on the other hand, is light, broad, shallow, smooth and large, giving evidence of the infinite wisdom and skill that entered into constructing it for the high purpose it was designed to serve. FEMALE ORGANS OF REPRODUCTION The female organs of reproduction are divided into two groups, the _internal_ and the _external genitals_. With them are usually considered certain other structures: the _ureters_, _bladder_, _urethra_, _rectum_ and the _perineum_, because of their close proximity (Fig. 10.); and the breasts, because of their functional relation to the reproductive organs. =Internal Genitalia=. The internal organs of generation are contained in the true pelvic cavity and comprise the _uterus_ and _vagina_ in the centre, an _ovary_ and _Fallopian tube_ on each side, together with their various ligaments, membranes, nerves and blood vessels and a certain amount of fat and connective tissue. The =uterus= is the largest of these organs. In its nonpregnant state, it is a hollow, flattened, pear-shaped organ about three inches long, one and a quarter inches wide, at its broadest point, three-quarters of an inch thick and weighing about two ounces. [Illustration: FIG. 10.—Anterior view of female generative tract, showing both external and internal organs. Drawn by Max Brodel. (Used by permission of A. J. Nystrom & Co., Chicago.) ] Ordinarily it is a firm, hard mass, consisting of irregularly disposed, involuntary (unstriped or plain) muscle fibres and connective tissue, nerves and blood vessels. The arrangement of the uterine muscle fibres is unique, for they run up and down, around and crisscross, forming a veritable network. This strange arrangement of the fibres is favorable to the growth of the uterine musculature during pregnancy, and a factor in preventing hemorrhage after delivery. The abundant blood supply to the uterus merits a word. It is derived from the uterine arteries, arising from the internal iliacs, and the ovarian artery from the aorta. The arteries from the two sides of the uterus are united by a branch where the neck and body of this organ meet, thus forming an encircling artery. A deep cervical tear during labor may break this vessel and a profuse hemorrhage occur as a result. [Illustration: