Explanation of the Engraving. 1. The Clitoris. 2. Right Outer Lip. 3. Right Inner Lip. 4. Entrance to the Vagina, or Passage towards the Womb. 5. Urinary Passage, or Mouth of Bladder. 6. Intestine of the Rectum. 7. Covering, or Wall of the Vagina. 8. The Bladder. 9. Covering of the Womb. 10. The Ovaries, showing their connection with the Womb by the Fallopian Tubes. 11. The Abdomen.] It will be understood, from the foregoing facts, that no female can produce more than a certain number of ova. When all are exhausted, the turn of life takes place. It is, therefore, desirable that girls should not become sexually excited before the full age of puberty, as such excitement is sure to hasten that period. The sooner they begin to menstruate, the sooner they become old women. In the same way maiden ladies usually reach the turn of life sooner than child-bearing women. In some women, the Ovaries being originally weak, or diseased, they are irregular in their menstrual periods, or have frequent flooding from the debilitated state of the organs. Deformity of children is supposed to arise from imperfect ova, and want of sufficient vital force to fully develop them. The ripening of the Ovum, or egg, is in many respects like unto the ripening of an apple on the tree. Some are perfect and beautiful, while others are deformed and ungainly in appearance. The two Fallopian Tubes, which connect the ovaries with the Womb, are very curious. They are hollow ligaments, a little larger at one end than the other. On dissection they are found to be lined with fine thread-like points, which point towards the smallest end of the tube, adjoining the Womb. These points are in perpetual motion, like small worms, and this operation is what causes the egg to pass through the tube. For the same reason nothing can go back in these tubes from the Womb to the Ovaries. These tubes also afford a passage for the secretions and fluids, which would otherwise accumulate in the Ovaries of women in ill health. A considerable portion of the discharges from the Vagina, to which some females are subject, come from the Ovaries through the Fallopian Tubes into the Womb, and thence to the lower passage. Sexual or amative feeling on the part of the female affects these tubes, by causing them to straighten and relax, thus working the points on the inner surface, and hastening the passage of the Ovum, should one be in the passage. This feeling also hastens the ripening of the Ovum, to a certain extent. The usual length of the Fallopian Tubes is from three to four inches. A woman may be made perfectly barren by tying ligatures round these two tubes, an operation which would be attended with but little pain. It is obvious, however, that her health might seriously suffer in consequence. In France, animals are frequently served in this manner in preference to the painful process of spaying.