If the flow continues five days or more, and especially if depressing effects are manifested, such as general weakness, languor, mental depression, with pain in the head, loins or back, the patient is undoubtedly suffering from the loss of blood, and it is best to restrain the flux by general and local means (F. 176.) At the time when the flow is profuse or long continued, give strong cinnamon tea, a teacupful at a time, or teaspoonful doses of tincture cinnamon every hour. Astringent pessaries should sometimes be used. Formerly injections of cold water were given; recently injections of hot water, as hot as can be borne in the vagina, are considered more effectual. Fluid extract of ergot, in half-teaspoonful doses, may be given every hour for two or three successive hours. Other remedies are elixir vitriol and turpentine, opium and acetate of lead during the attack; and counter irritation to the sacrum, the douche to the loins, sponging, cold vaginal injections, and the sitz bath during the interval. (F. 175). If astringent or cold injections are used, the patient should lie upon her back in bed, and the fluid should be thrown up gradually. Of course, there are cases where only an experienced, well-educated physician can do all that is required in removing the cause of the difficulty. CHAPTER VI. GENERATION. Generation is effected in the human species through the medium of the two sexes; to effect it there must be the actual contact of the male semen, or its spermatozoa, with a healthy Graafian vesicle. In CONCEPTION the SPERMATIC FLUID is furnished by the male. When this is examined under the microscope it exhibits a great number of little bodies, which are moving; these are termed spermatic animalcules, or spermatozoa. These are met with in all animals capable of reproduction, and they do not appear in the human species before puberty. The ovule furnished by the female is existent in the ovary at the marriageable period. Fecundation takes place in the ovary; probably, sometimes, also in the tube or uterus when the ovule is passing out after menstruation. Ordinarily the fluid ejaculated by the male must reach the uterus, and in some way be conveyed to the ovaries through the Fallopian tubes to produce fecundation. It is believed that, as the consequence of copulation, the semen is thrown on the neck of the uterus; that it is carried forward, first, by the movements proper to the uterus and tubes; second, by the movements proper to the spermatozoa till it reaches the ovum, generally in the ovary; that it enters the ovum, and that then fecundation takes place.