The _symptoms_ do not differ essentially from those of simple cysts and _treatment_ is mainly by castration. As the escape of the contents into the peritoneal cavity is especially provocative of infection, the greatest care must be taken to extract the mass whole, or to use the most thorough antiseptic precautions. SOLID OVARIAN TUMORS. These are much more rare than cystic tumors. They seldom maintain the character of perfect solidity, for whether fibrous, sarcomatous, melanotic, cretaceous, myomatous, cancerous, epithelial, tubercular, glanderous, or actinomycotic, they are usually associated with cysts to a greater or less extent. Not only are they liable to stimulate the formation of cysts, but the special heteroplasia may become engrafted on the walls of pre-existing cysts, as well as on normal tissues. The _symptoms_ of the solid tumors are in the main, those of the cystic form, and _treatment_ resolves itself into extirpation by castration. Its success will vary according to the nature of the tumor, sarcoma, melanoma and carcinoma being especially liable to recur in the same or in distant situations, and the same is true of the colonizing with infectious germs (glanders, tuberculosis, actinomycosis) which are presumably already present in other parts of the body. Castration has, however, this recommendation, it secures the removal of the entire diseased organ, and if the morbid process or infection is confined to that only, it holds out the best prospect of recovery. INFLAMMATION OF THE FALLOPIAN TUBES. SALPINGITIS. This condition is met with in the female mammals of all species and mainly as the result of an infection extending from diseased womb or ovary. The results are degeneration of the epithelium, exudation into the mucosa with thickening, stenosis of the tubes, the formation of cysts along the line of the canal, with pink or straw colored contents, including fibrine, leucocytes, epithelium and granular debris. As in oöphoritis there may be blood extravasations and clots and abscess. In the cow they are at times calcified and create a suspicion of tuberculosis. The _symptoms_ are essentially those of metritis or ovaritis, and as these are usually more prominent the attendant salpingitis is generally overlooked during life. Careful rectal examination may detect the enlarged, tender or sacculated tubes. _Treatment_ may be laxative, diuretic, derivative, and antiseptic toward the womb. Ablation of the ovaries, tubes and even the womb is often required. DISEASES OF THE OVIDUCT IN BIRDS.