Acute inflammation of the endometrium sometimes occurs during the course of the exanthemata. The changes that take place in the mucous membrane of the uterus are similar to those seen in other mucous membranes during the course of these diseases. The local condition is usually limited by the duration of the general disease. It is probable that some of the cases of arrested development of the internal organs of generation, and cases of chronic tubal and ovarian disease seen in later life, may be traced to this exanthematous form of endometritis occurring during girlhood. The symptoms of acute endometritis vary very much in severity. Dull pain in the region of the uterus, referred to the supra-pubic region and the sacrum, is usually present. Reflex disturbance of the bladder, characterized by frequent and often painful urination, may be present; and it is very probable that mild cases of endometritis have been diagnosed and treated as light attacks of cystitis. The temperature in the puerperal cases may be very high. The discharge from the cervix is very much increased, is puriform in character, and is occasionally streaked with blood. Digital examination shows that the external os is patulous, the cervix enlarged and soft, and the body of the uterus somewhat enlarged and tender upon pressure. This tenderness may be elicited by pressing the fundus between the vaginal finger in the anterior vaginal fornix and the abdominal hand. Examination through the speculum shows the discharge escaping from the external os. In case the cervical mucous membrane is also involved, a red area of erosion will be seen surrounding the os. Acute endometritis of non-puerperal origin is best treated by rest in bed, vaginal douches of hot boric-acid solution (ʒj to a pint of water) or of bichloride of mercury (1:4000) at a temperature of 100° to 110°, and the continuous use of saline purgatives. Active intra-uterine treatment in these cases is not necessary. When, however, the disease occurs, as it usually does, from septic infection at a miscarriage or a labor, more radical treatment must be used. This treatment comprises frequently-repeated intra-uterine douches, thorough curetting of the uterus, and, finally, hysterectomy in extreme cases. Every case of acute endometritis should be carefully watched and treated until the disease is cured. Acute endometritis, especially if gonorrhea is the cause, is very prone to become chronic and to extend to the mucous membrane of the Fallopian tubes and the ovaries. CHRONIC CORPOREAL ENDOMETRITIS. Chronic inflammation of the endometrium, or chronic endometritis, is much more frequently seen in practice than the acute form. It may occur as a primary disease, but it very often occurs as the result of some other pathological condition of the uterus, as, for instance, subinvolution or uterine fibroid.