To those who for various reasons desire to adopt a vegetarian diet I would say, do not substitute bread and vegetables for meat. Do not spend your energy making new and complex dishes as advocated in fashionable vegetarian cook books. Compounds containing several soft proteins such as beans, nuts, eggs and cream, besides starches, are a burden to the liver and alimentary canal and lay the foundation for new diseases. If cooked foods are required, study carefully the preparation of nutritious soups, well boiled cereals, salads, and add as many raw foods as possible. Exercise more in the open air, live and work in sunny well ventilated rooms, retire early and live as close to nature as you can. I hope that the following pages may serve as a stepping stone for all who desire to eat less meat, as well as for those who wish to become vegetarians. In adopting a raw food diet, or in reducing heat-giving elements, such as artificial sugars and hot drinks, it is important to apply more external heat to the body for a while, or else have the morning meal served in a sunny room. Plenty of outdoor exercise is necessary to properly utilize a vegetarian diet. FOOD REQUIREMENTS. It is important that the diet should contain the proper amount of protein, starches and fats, suitable to the individual needs. Age, weight, height, occupation, season and climate must all be considered. Numerous and careful researches regarding food requirements made during the last fifty years have led to the realization that the majority of civilized men and women consume from two to three times the amount of food necessary. FOOD FOR THE AGED. Many people at the ages of sixty and seventy still lead an active life, while others retire from activity at forty-five or fifty. Therefore, the food should conform to the person's mental and physical requirements. If the teeth are poor and the digestive powers weak, the food should be light, consisting mainly of well cooked cereals, baked potatoes, rice, cooked greens, a small amount of meat, raw fruits and raw greens in combination with fatty foods, as salads, milk and buttermilk, toasted breads and soups. The total fuel requirement depends upon whether the individual leads a quiet or active existence. For a person who lives mainly indoors, and makes little use of the muscles of the arms, shoulders and trunk, 1000 to 1200 calories is sufficient for twenty-four hours. If more food is eaten than the body requires, the excess will manifest itself by the development of chronic ailments and obesity, or feeble-mindedness.