_Treatment._--A lotion of a dram of alum in a quart of water may be applied (injected into the sheath, if necessary), and a large sponge constantly irrigated by a stream of cold water may be kept applied by means of a surcingle to the outer side of the sheath. Incisions are rarely applicable to an organ of this kind, but in case of the existence of an extensive clot which is unlikely to be absorbed the lancet may be resorted to. If the injury leads to paralysis of the penis and hanging out of its sheath, it should be supported in a sling and astringents used freely until inflammation subsides. Then the restoration of power may be sought by a blister between the thighs, by the use of electricity, or by the careful use of nerve stimulants, such as strychnin, 1 grain twice daily. ULCERS ON THE PENIS. Sores on the penis of the bull may result from gravel or sebaceous masses in the sheath or from having served a cow having leucorrhea. _Treatment._--These may be treated by frequent injections into the sheath of a lotion made with 1 dram sugar of lead, 60 drops carbolic acid, and 1 quart water. POLYPUS OF THE VAGINA OR UTERUS. A polypus is a tumor growing from the mucous membrane, and often connected to it by a narrow neck. A definite cause can not always be assigned. If growing in the vagina, a polypus may project as a reddish, rounded tumor from the vulva, especially during the act of passing water. It can be distinguished from descent of the womb by the absence of the orifice of that cavity, which can be felt by the oiled hand beyond the tumor in the depth of the vagina. From a vaginal hernia caused by the protrusion of some abdominal organ enveloped by the relaxed wall of the vagina it may be distinguished by its persistence, its firm substance, and the impossibility of returning it into the abdomen by pressure. A hernia containing a portion of bowel gurgles when handled and can be completely effaced by pressure, the gut passing into the abdomen. A polypus in the womb is less easily recognized. At the time of calving it may be felt through the open mouth of the womb and recognized by the educated touch (it must be carefully distinguished from the mushroom-formed cotyledons (Pl. XIII, fig. 2), to which in ruminants the fetal membranes are attached). At other times, unless the womb is opened in the effort to expel it, the polypus can be detected only by examining the womb with the oiled hand introduced through the rectum.