The term biliousness is a loose one, employed more especially by the public to indicate their condition when they feel sick, off colour, headachy, and the vomit contains bile. The cause of this condition is a duodenal and gastric catarrh, this catarrh being doubtless associated with a general congestion of the liver. This catarrh is doubtless of bacterial origin, previous dietetic excesses on the patient's part being the primary factor in its development. In people predisposed to it, chill acts as an exciting cause, more especially in gouty patients. The dietetic treatment is simple, and consists in starvation for twenty-four hours or so, aided by rest, and the use of a blue pill and saline purge. After a day's starvation the patient should live for a couple of days on the lightest simple food, e.g., beef-tea, chicken jelly, milk diluted, gruel, pounded fish or chicken, and toast or rusks. The later dietetic treatment consists in moderating the diet which has usually been excessive, making it simpler where it has previously been rich and varied, and especially restricting the amount of sweets. This advice is very frequently disregarded. The patients prefer the pleasures of the table, and rely on an annual visit to some spa for the correction of the functional disorders of the liver and other digestive glands induced by their immoderate eating and drinking.