The regulation of diet, when the liver is in an abnormal condition, must be more in the _quantity_ than in the _quality_ of food. The condition of the liver depends also on the activity of the intestines, since the poisonous products from imperfectly digested and fermenting food, not being eliminated, will be absorbed and carried to the liver. If the food remains in the intestines too long, it is attacked by the bacteria always present there, fermentation results and poisons are absorbed and carried to the liver, which usually can render them harmless to the system. If for any reason the liver is diseased, overloaded, or its action is sluggish, these toxins are absorbed in larger quantities than the liver is able to handle, hence they reënter the blood and poison the system. The most important corrective agencies, when the liver is inactive, is a fast for a day or two, a free drinking of water, deep breathing, and exercise so directed as to bring a free supply of blood to this organ. _It is apparent that the blood must carry its full quota of oxygen to assist in eliminating both the nitrogenous waste and the poisons._ It must also be remembered that the liver must oxidize the waste from its own tissues, as well as from other parts of the system. * * * * * [Sidenote: Biliousness] This condition is due to the overproduction of bile which may be absorbed into the blood to inactivity of the body and a resultant sluggish circulation of blood; to overwork of the liver due to overeating; and to insufficient breathing of pure air. It may also result from constipation and the resultant absorption of toxic matter, as previously described. It may be occasioned also by obstruction of the opening of the bile duct into the intestines from an excess of mucus in the duodenum. In such cases exercises for the intestines are clearly indicated. In the bending, twisting, and squirming movements which the infant in the cradle makes, the liver is regularly squeezed and relaxed. The same is true of the free movements of an active child at play. If during adult life these same free movements of bending and twisting the trunk were continued daily and correct habits of free breathing of pure air were established, there would be little call for “liver tonics.” The transformation of carbohydrates in the liver is an important part of its work and in case of inactive liver the sugars and starches should be limited in the diet. Protein stimulates the activity of the liver, yet it is a mistake to allow a diet too rich in protein. The best method is to cut down the quantity of food. Two glasses of water an hour before breakfast, followed by brisk exercise for the vital organs and deep breathing, are the best remedies. The daily action of the bowels is imperative.