THE FALLOPIAN TUBES are the ducts of the Ovaries, and serve to convey the ova, or eggs, from the Ovaries to the cavity in the Uterus. They are two in number, one on each side, each tube being about four inches in length. They extend from either side of the fundus of the womb, through the broad ligaments which hold them and the Ovaries in position until they communicate with the Ovaries. They are lined with a membrane composed of the same kind of peculiar hair-like cells which are found in the lining of the womb, the purpose in this case being to urge forward the ova or eggs toward the Uterus. At the ovarian end of the tubes the latter expand into a fringed, trumpet-shaped extremity, the fringe being known as "the fimbria." The tubes are only about one-sixteenth of an inch in diameter, and their small caliber makes it easy for them to clog up as the result of slight inflammation, or to become clogged up or sealed at their mouths or openings, thus causing sterility or inability of the woman to conceive. If the tubes are clogged, or sealed up, it of course is impossible for the ova or eggs to reach the uterus. THE OVARIES are the two oval-shaped bodies lying one on either side of the Uterus. In them the ova, or eggs, are formed. They are each about one and one-half inches long, about one inch wide, and about one-half an inch thick. In addition to their attachment to the broad ligament, they are held in position by folds or ligaments running to the fundus of the Uterus and to the fimbriated extremities of the Fallopian Tubes. The Ovaries are covered by a dense, firm coating which encloses a soft fibrous tissue, abundantly supplied with blood-vessels, which is called the stroma. Imbedded in the mesh-like tissue of the stroma are found numerous small, round, transparent vesicles, in various stages of development, known as the Graafian follicles, which are lined with a layer of peculiar granular cells. These Graafian follicles are the receptacles or sacs which contain the ova, or eggs, which constitute the female reproductive germ. Each vesicle contains a single ovum or egg. Summary.