_a. a. a._ The solid walls of the Womb cut through. _b._ That part of the cavity, or hollow of the Womb, which is in the fundus, or top. _c._ That part of the cavity which is in the lower part, or neck, of the Womb. _d._ The Vagina. _e. e._ The cut edges of the Vagina. _f. f._ The positions of the Fallopian Tubes, which are cut off, and down the passages of which two needles are passed. _g._ The Os Tincæ, or Mouth of the Womb.] In addition to the general explanation already given, there are some of the Female organs whose peculiar structure requires to be more fully noticed, on account of its important influence on some of the processes hereafter to be described. THE WOMB. The external appearance of the womb, viewed in front, and in connection with its appendages, is shown in Plate III. It is placed in the Pelvis, between the bladder and the Rectum, and at the top of the Vagina, as seen in Plates I and II. Its internal structure is represented in Plate IV. The length of the Womb, after puberty, is about three inches; its breadth at the upper part, or fundus, about two inches; and at the cervix, or neck, about one inch. The cavity in the interior is small, owing to the thickness of the walls, and its form is triangular. The shape of the Womb resembles a pear, somewhat flattened, from before backward. Previous to puberty its size is much smaller, and with those who have had children it often exceeds the dimensions we have given. The _Neck_, or narrow part, (_c._ Plate IV.) is much changed by pregnancy. In virgins it is long and pointed, and somewhat enlarged in the middle. In those who have borne children it is considerably shorter, more obtuse, and less regular in its form. The cavity in the Neck is larger in the middle than at either end, as will be seen in Plate IV. The _Os Tincæ_, or mouth of the Womb, also undergoes considerable change from the same cause. In the young person it is merely like a small slit, scarcely to be felt, but after pregnancy it much enlarges, and remains more or less permanently open. The anterior lip, or the one in front, is somewhat larger than the posterior one. The body of the Uterus is formed of a very dense, gray colored, muscular substance, possessing astonishing contractile power. The interior is lined, like the Vagina, with a mucus membrane, and the whole organ is plentifully supplied with arteries, veins, and nerves.