. The science and art of midwifery . alf of a normal uterus. 3. Uterus Bicornis.—Partial union of the filaments of Midler takesplace, but without reaching the ordinary level indicated by the inser-tions of the round ligaments. The upper portion of the uterus is thusdivided into two horns, separated by a furrow from one another. 4. Uterus Cordiformis.—The uterus remains of the fetal type indi-cated in Fig. 25. Instead of a complete development of the fundus,the latter remains depressed, and presents an appearance remotely re-sembling the heart of a playing-card. 5. Uterus Septus Bilocularis.—Co
. The science and art of midwifery . alf of a normal uterus. 3. Uterus Bicornis.—Partial union of the filaments of Midler takesplace, but without reaching the ordinary level indicated by the inser-tions of the round ligaments. The upper portion of the uterus is thusdivided into two horns, separated by a furrow from one another. 4. Uterus Cordiformis.—The uterus remains of the fetal type indi-cated in Fig. 25. Instead of a complete development of the fundus,the latter remains depressed, and presents an appearance remotely re-sembling the heart of a playing-card. 5. Uterus Septus Bilocularis.—Complete union of the two filamentsof Midler has taken place, but the common wall, formed by their co-alescenee. persists. We have thus two distinct uterine cavities. Theseptum may extend the whole length of the vagina, and give rise to adouble vagina; or absorption of the vaginal septum and a portion ofthe uterine septum may have taken place, so that we may have a doubleuterine cavity with a single cervix, uterus Flo. 27. Qterua semi-partitus. travel.) PHYSIOLOGY OF TILE OVUM. CHAPTER II. DEVELOPMENT OF THE OVUM. The Graafian follicles and the ovum.—Discharge of the ova from the ovary, and theformation of the corpus luteum.—The migration of the ovum.—Fecundation.—Changes taking place in the ovum subsequent to fecundation.—Nourishment ofthe embryo.—The allantois and chorion.—The deciduse.—The placenta; its de-velopment and structure.—Formation of the umbilical cord.—The amnioticfluid. The physiology of theand discharge from the ovof subsequent changes bywhich the simple structureof the germ becomes con-verted into a complex or-ganism presenting the spe-cific characteristic of theparent. The following accountof the history of the ovumis derived in great measurefrom Waldeyer.* The Graafian les axi) the Ovum.—In the embryo of the chick,by the fourth day of incu-bation, the Wolffian bodyis covered by cylindricalepithelium, contrasti
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