The use of fruit, again, is especially indicated in persons disposed to the formation of uric acid in excess. When this actually occurs, the system becomes overloaded with deleterious matter, and the blood and body fluids are then saturated with a MATERIES MORBI. This morbific material is best understood by regarding it as being in an incomplete or half-way stage, in which form it is injurious. But, on the other hand, if it had proceeded to its final change, the completed product would have been harmless. Indeed, it is as the latter that it mostly leaves the body in ordinary conditions of health. Well then, the retention within the system of this incompletely transformed material gives rise to various symptoms. One of them is a bitter or "coppery" taste in the mouth, notably in the early morning. Oftentimes, too, patients will complain that they do not feel at all refreshed on rising, even when they have slept fairly well--which does not happen too frequently. There may be also a great tendency to drowsiness, accompanied by severe pains in the limbs, coming on about an hour after meals. Other symptoms which are commonly met with are great irritability of the temper and lowness of spirits. There is frequently a headache of a peculiar kind. It comes on generally in the morning, and may last all day, or even for several days. It is a dull, heavy pain, felt most often in the forehead. A curious feature of the affection which sometimes exists is an incontrollable desire to grind the teeth during the waking hours. There are other symptoms, also, characteristic of the same malady, namely, palpitation of the heart and intermittency of the pulse; a liability to colds on the chest; and perhaps repeated attacks of difficulty in breathing. From all this it follows that a more liberal supply of fruit for such individuals would be followed by the most beneficial results and their children might well be taught to follow their example. For it must be remembered that all fruits contain alkaline salts which are good for the blood. These alkaline vegetable salts become changed within the body, and converted into the carbonate of the alkali, in which latter form they pass out of the system.