4. =Rectum=. Note _contents_ (amount, color, consistence, odor, etc.), _color_ and _character of mucosa_ (normally grayish red or reddish gray, smooth and translucent, solitary follicles just visible). Normally the rectum should contain formed brownish féces; in catarrh the contents are fluid and not formed, while the mucosa is covered with a thick glassy mucus. In obstruction of the gall-ducts the féces are gray (“clay-color”). In catarrhs and chronic passive congestion the mucosa is red. Decubital ulcers are often green from the imbibition of bile, and are surrounded by hæmorrhages. They are circular or correspond in shape to the fécal mass pressing upon them. Traumatic ulcers, hæmorrhages, diphtheritic inflammation, follicular ulcers, foreign bodies, stricture, fécal impaction, hæmorrhoids, fissures, fistulous tracts, tuberculosis, syphilis, adenomatous polyps and carcinoma are the most common pathologic conditions. The oxyuris vermicularis is the most common animal parasite. Gonorrhœa of the rectum is not uncommon. Stricture is most commonly caused by syphilis. 5. =Prostate.= Normal size is about that of a walnut or horse-chestnut. Weighs 19-25 grm. Average dimensions are 2.7 cm. long, 4.0 cm. broad, 2.0 cm. thick. Note form, consistence, color of cut-surface (smooth or granular), amount of secretion, corpora amylacea (color brown to black), size of gland-spaces, cysts, abscesses, tubercles, neoplasms. The most common pathologic conditions are: hyperplasia (usually inflammatory, the result of old gonorrhœal infection, less commonly due to chronic pyogenic infection), neoplasms (carcinoma is relatively common, usually developed in a prostate showing chronic inflammatory hyperplasia, adenoma, myoma, fibroma, myofibroma), cysts, acute inflammation (usually gonorrhœal), typhoid prostatitis, abscesses, tuberculosis, syphilis (rare) and atrophy. Thrombosis and the formation of phleboliths are very common in the prostatic veins; they are usually associated with gonorrhœal infection. The inflammatory hyperplasia may involve one or all three lobes of the prostate. In old men showing no evidences of prostatic inflammation the prostate may be atrophic. 6. =Seminal Vesicles and Duct.= Should be symmetrical. Note size, contents, character of wall, and appearance of lining membrane. They measure 3-5 cm. long, 1-2 cm. broad and 0.7-1.5 cm. thick. Gonorrhœal inflammations and tuberculosis are the most common conditions. In old men the vesicles contain a brownish-yellow mucoid substance. As a result of chronic inflammation the walls of the vesicles are thickened, often hyaline; the lumen is sometimes wholly obliterated. Calcification of the wall is not uncommon. Concretions are found in the vesicles following obstruction. Cystic dilatation may occur. Primary neoplasms (carcinoma and sarcoma) are rare.