Obstruction (_oppilatio_) of the liver or enfraxis is defined as a disease of the canals (_pori_), of which four are enumerated, to-wit, the meseraic, that of the convexity of the organ (_gibbus--ubi sunt exitus capillarium venarum_), the duct leading to the gall-bladder and that leading to the spleen. With an abundance of symptoms, it is singular that this comprehensive disease does not seem characterized by any constant or severe pain, as we might reasonably expect. Abscess of the liver depends upon some vice of the blood, the bile, the phlegm or the black-bile. The general treatment is poultices and other maturatives, but, as the author adds rather sadly at the close, _ultima cura est per incisionem_. Dropsy is discussed as an independent disease through the exhaustive speculations of thirty-two pages. Gilbert tells us it depends upon some fault of the digestive faculty of the liver, and he divides it into four species, to-wit, leucoflantia, yposarcha, alchitis and tympanitis, each of which has its special and appropriate treatment. In the dreary waste of speculative discussion it is cheering, however, to observe Gilbert's positive recognition of the sphere of percussion indicated in the passage: "_Et venter percussus sonat ad modum utris semipleni aqua et venta._" (f. 250b.) Ycteritia or jaundice receives equally thorough discussion through eight weary pages, including the usual polypharmacal treatment. The spleen, Gilbert says, is sometimes the name of an organ, sometimes of a disease. As an organ it is spongy and loose in texture, and attracts and retains the superfluities of the black-bile, expelled from the liver for its own cleansing. Hence it is a servile and insensitive organ, and accordingly suffers different diseases, such as obstruction, tumors, hardening, softening, abscess, and sometimes flatulence or repletion. The symptoms and treatment of each of these morbid conditions, arising from either heat or cold, are discussed with exasperating thoroughness, and the chapter concludes with the composition and use of various specific remedies of compound character, bearing the impressive titles of Dyasene, Dyacapparis, Dyaceraseos (a mixture of cherry juice, honey, cinnamon, mastic and scammony) and Agrippa.