64 PA THOGENIC BA CTERIA. forms, the mucous membranes, the intestine in particular in such diseases as anthrax, typhoid, and cholera; the bile almost always; the sweat generally; the kidney when damaged; the mammae in tuberculosis and septicemia particularly, and, of course, such of the pathological products of the disease-process as pus from abscesses, dejecta of typhoid and cholera, expectoration in diph- theria and tuberculosis, etc. The bacteria that are not excreted, but retained in such organs as the spleen, bone-marrow, and lymphatic nodes, are probably slowly devitalized and dissolved.