There are cases of liver trouble where there is no interference with the glycogenic and oxidizing action of the liver, and where an entirely different diet is required. Therefore, no patient should attempt to treat a disease by a book, without having his case diagnosed by a physician and receiving advice as to the special diet required. TUBERCULOSIS. It is one of the most fatal diseases that affects men and animals. It is due to a germ called the bacillus of tuberculosis. This germ, however, is not the primary cause for the development of the disease. Wrong environment, unclean air and food are the causes that multiply these germs. Hereditary weaknesses play an important part, but the disease itself is never inherited. Lowered vitality, infection through milk and meat, and careless spitting are in a large measure responsible. Children of parents who suffer from tuberculosis may grow up into healthy and strong individuals, if the proper conditions are furnished. Tendencies to disease are universally manifest in the weaker structures, and this weaker resisting power is the exact measure of the power inherent in heredity. Tuberculosis may affect the lungs or manifest itself in different parts of the body, and is known under the following names: Potts disease or curvature of the spine; hip joint disease, when it affects the hip joint; white swelling or knee joint disease; ankle joint disease; lupus or skin disease; scrofula, when it affects the glands of the neck; tuberculous ulceration, when it affects the inside of the intestine; tuberculous peritonitis, when it affects the outside of the intestine; and consumption, when the lungs are involved. PREVENTION OF TUBERCULOSIS. The House We Live In. Sunlight is the best known disinfectant. The direct rays of the sun destroy tubercular germs and the majority of other micro-organisms. Plants cannot grow without sunshine. Human beings cannot enjoy health in dark dwelling places, without sunlight. The houses we live in should contain a large number of windows and glass doors, so as to permit all rooms to be permeated with sunlight. It is a pity that modern houses, with all their conveniences and sanitary arrangements, have so little provision for proper sterilization by sunlight.