With a third class the inflammation spreads from the lining membrane to the substance of the womb itself, causing an enlargement of the uterus, which induces displacements and a dragging sensation in walking, pain in coitus and painful defecation. The inflammation does not limit itself to the womb, but an ichorous discharge creates distressing symptoms of vaginitis, inflammation of the bladder, and pruritus vulvæ. When the uterine cavity is the seat of an abnormal vascular activity, there often exist symptoms of pregnancy that may mislead the patient or physician. Nausea and vomiting are sometimes present, the darkening of the skin around the nipples, and an enlargement and sensitiveness of the breasts, meteorism, or a swelling of the abdomen, caused by the accumulation of air in the intestinal canal from reflex nervous irritation, and when this symptom is added to the irregularity of menstruation, it is easy to fall into the error of diagnosing pregnancy. Sterility on the one hand, and habitual abortion on the other, should direct attention to the probable existence of endometritis. Very often barrenness has led to an investigation of the condition of the uterus which disclosed the existence of the disease. A woman who conceives, and then loses her child in the first months of pregnancy, is afflicted, in all probability, with a chronic endometritis. In these cases, where conception takes place, it is to be presumed that the sensitiveness and irritability of the inflamed mucous membrane is not suitable for the permanent fixation of the ovum, so that the slightest shock will open the flood gates of a congested uterus, and thus the embryo is separated from its attachment, and lost. The cervix is sometimes the seat of a special feature of uterine catarrh, that is due to the chronic inflammation of the cervical mucous membrane, stimulating a growth or proliferation of its own tissue or structure. This growth causes an enlargement and elongation of the entire cervix, and a spreading of the lining membrane of the cervical canal to the vaginal surface of the cervix. This encroachment of the cervical lining on the vaginal lining is the displacement of the pavement epithelial cells of the vaginal portion by the cylindrical or columnar epithelial cells of the cervical canal, and this gives rise to _erosions_ and follicular ulcers. These erosions have a glandular arrangement, and are often mistaken for cancerous or malignant growths. There is no doubt in my mind, that most of the so-called successful cures of cancer were nothing but cures of erosions.