Mares, cows, sows, etc. Causes: traumas, œstrum, parturition, leucorrhœa, pus infection, strangles, dourine, glanders, abortion, tuberculosis, chill, poisons. Lesions: Ovary enlarged unequally, red, congested, exudate, extravasation, fibroid, caseated, purulent, abscess single or multiple, indurations, cretefactions, cysts, blocking of Fallopian tube, adhesions. Symptoms: mare: genital erethism, soiling of vulva and tail, colics, tender loins and mammæ: fever, dullness, emaciation, decubitus, paraplegia, swollen tender ovary: cow: bellows, paws. Sterility, anæmia, pyæmia. Treatment: Cold to croup, mustard, anodynes to vagina, calmatives, antiseptics. Castration. This has been frequently seen in mares, cows and sows, but it may occur in any of the female mammals or even in birds. _Causes._ The condition has been ascribed to blows on the flanks, pressure on the abdomen and the congestion of the ovary which attends on frequent œstrum in the absence of the physiological quiet which comes from conception. In a large proportion of the cases, however, the attack has followed on parturition, abortion, a preëxisting leucorrhœa or metritis, or a suppurating process in some other part of the body. These cases therefore, must be looked upon as secondary and infective, the microbes having been transferred from the womb, along the Fallopian tubes, or through lymph vessels, or peritoneal cavity, or finally through the circulating blood. In mares strangles, abortion, leucorrhœa, dourine and glanders, and in cows and sows abortion, metritis, leucorrhœa, and tuberculosis, may prove the starting point of the infection. Sudden chills when heated, perspiring or exhausted and especially exposure in inclement weather just before or after parturition, have been regarded as effective causes, and doubtless these lower vitality and power of resistance, but back of these we must look for infection coming from the parturient womb. Bivort records an extensive epizootic of oöphoritis in sows kept on waste ground which had been used for herding swine years before. He attributes the trouble to poisonous plants, without, however, attempting to identify them, and the probability is even more strongly in favor of infection left over from the former herds.