Fruits of all kinds can be recommended for the same reasons that make the green salads so useful to the body. They are of the very greatest value where there is any tendency toward biliousness. In many cases of this kind where it is undesirable to undertake an absolute fast as a means of setting the stomach right and where there is a lack of appetite, a fruit fast can be highly recommended. This is simply an exclusive diet of fresh acid fruits, such as oranges, grapefruit, grapes, cherries, apples and other fresh fruits in season. It is especially important to know in such a case that these fruits should be eaten in their strictly natural condition, properly ripened and without the addition of sugar. As a general thing a sufficient allowance of fruit and green salads will so balance the diet that one is not likely to have any trouble even if he eats heartily of the foods served at the ordinary table. It would be well also to remember that acid fruits have valuable antiseptic (cleansing) qualities. They keep the mouth and teeth as well as the alimentary canal in a wholesome state. In fact the frequent use of acid fruit, more especially the orange, is of great value in counteracting the effects of digestive difficulties on the mouth and teeth. If a small piece of orange is taken whenever there is an unpleasant taste in the mouth it will destroy the germ life that is being rapidly propagated under such circumstances, though such symptoms indicate also the need of acid fruit of some sort by the stomach. Especially is this required if there is a craving for fruit of this sort. In such cases the rule against eating between meals may be disregarded. Whenever you have a strong desire for acid fruits between meals you are usually safe in using them. In fact they are often sorely needed under such circumstances to assist in digesting a meal that may have been eaten some hours previously. Indigestion which leaves the mouth with a foul, unpleasant taste is often noticed on awakening at night after a hearty meal the evening before. On such occasions a few swallows of water, or whatever is needed to satisfy thirst, and a small quantity of acid fruit, like the orange, are of great value. They should be well mixed and moved about in the mouth until the acid comes in contact with every part of the mouth and teeth. When there is the slightest sign of digestive difficulties I would advise that each meal be completed with a small quantity of fruit. If you stop your meal at a time when you can enjoy the taste of acid fruit it is usually a definite proof that you have not overeaten.