4. THE PRESENCE OF THE HYMEN was formerly considered a test of virginity, but this theory is no longer held by competent authorities, as disease or accidents or other circumstances may cause its rupture. 5. THE OVARIES.--The ovaries are little glands for the purpose of forming the female ova or egg. They are not fully developed until the period of puberty, and usually are about the size of a large chestnut. The are located in the broad ligaments between the uterus and the Fallopian tubes. During pregnancy the ovaries change position; they are brought farther into the abdominal cavity as the uterus expands. 6. OFFICE OF THE OVARY.--The ovary is to the female what the testicle is to the male. It is the germ vitalizing organ and the most essential part of the generative apparatus. The ovary is not only an organ for the formation of the ova, but is also designed for their separation when they reach maturity. 7. FALLOPIAN TUBES.--These are the ducts that lead from the ovaries to the uterus. They are entirely detached from the glands or ovaries, and are developed on both sides of the body. 8. OFFICE OF THE FALLOPIAN TUBES.--The Fallopian tubes have a double office: receiving the ova from the ovaries and conducting it into the uterus, as well as receiving the spermatic fluid of the male and conveying it from the uterus in the direction of the ovaries, the tubes being the seat of impregnation. [Illustration: OVUM.] 9. STERILITY IN FEMALES.--Sterility in the female is sometimes caused by a morbid adhesion of the tube to a portion of the ovary. By what power the mouth of the tube is directed toward a particular portion of an ovary from which the ovum is about to be discharged, remains entirely unknown, as does also the precise nature of the cause which effects this movement. * * * * * {238} THE MYSTERIES OF THE FORMATION OF LIFE. [Illustration: Ripe Ovum from the Ovary.] 1. SCIENTIFIC THEORIES.--Darwin, Huxley, Haeckel, Tyndall, Meyer, and other renowned scientists, have tried to find the _missing link_ between man and animal; they have also exhausted their genius in trying to fathom the mysteries of the beginning of life, or find where the animal and mineral kingdoms unite to form life; but they have added to the vast accumulation of theories only, and the world is but little wiser on this mysterious subject. 2. PHYSIOLOGY.--Physiology has demonstrated what physiological changes take place in the germination and formation of life, and how nature expresses the intentions of reproduction by giving animals distinctive organs with certain secretions for this purpose, etc. All the different stages of development can be easily determined, but how and why life takes place under such special condition and under no other, is an unsolved mystery.