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There are a number of diets formulated to meet the various normal and abnormal conditions. In hospitals these are classified as follows, for the convenience of both nurse and doctor:

House Diet.—That which is served to the hospital staff, the nurses, and those patients not requiring special diets.

Liquid or Fluid Diet.—Consisting of milk, nutrient and other palatable beverages, broths, and thin gruels.

Light, Semi-solid or Convalescent Diet.—Composed of thick or cream soups, eggs, toast, cereals, custards, jellies and ice cream, and later vegetable purées, broiled birds, chicken, lamb chops, and rare beefsteak.

Mixed Diet.—The diet used in normal conditions and for those not affected by any special food.

Special Diets.—Those designed to be used for certain pathological conditions, such as scarlet fever, nephritis, etc. These diets are classified as follows:

Milk Diet.—A diet in which milk is the sole article of food.

Carbohydrate-free Diet.—One in which the sugars and starches are eliminated.

Purin-free Diet.—One in which the foods rich in purin bases are eliminated. This is used in gout, arteriosclerosis, etc.

Salt-free Diet.—Diet in which sodium chloride (salt) is as far as possible excluded. It is used in certain cases of nephritis when edema is present.

Nephritic Diet.—A diet used in nephritis and diseases complicated by nephritis (scarlet fever). In this diet the protein foods, meat in particular, are restricted, milk being the exception.

Diabetic Diet.—A diet in which the carbohydrates are restricted or eliminated.

“Allen Treatment of Diabetes” consists chiefly of “starvation” for a given period and a reëducation of the organs to a toleration for carbohydrates.

Emaciation Diets.—Those containing a high percentage of fat-forming foods, such as milk, cream, eggs, cereals, potatoes, etc., olive oil.

Obesity Diets.—Those containing as few of the fat-forming foods as possible, such as cream, olive oil, potatoes, white bread, etc., pastry and desserts, candy and soda water, and containing lean meats, fish or shellfish cooked and served without butter or other fats, fresh or stewed fruit without sugar, green vegetables and salads served without oil or other fats; one egg a day two or three times a week, coffee and tea without sugar or cream, toasted gluten bread (1 slice) without butter, saccharine substituted for sugar.

There are a number of other diets, but they come more or less under the above heads.