The diet in acute pneumonia, acute pleurisy, and acute bronchitis calls lor little comment in the way of detailed description. Pneumonia is not really a lung disease, but an acute infective fever with a local lung lesion, and it is to be treated with the fever diet elsewhere described, a prolonged course of generous feeding being indicated in convalescence (see p. 288). Similarly, pleurisy is hardly a lung affection, but is usually a tuberculous manifestation, and to be treated along the lines laid down in the section on Tuberculosis. At the outset of an acute pleurisy in a previously healthy subject, the diet for a few days should be the simple fever diet described on p. 267; when the initial symptoms have abated, a full convalescent diet (p. 292) may be prescribed, keeping in mind the special value of animal protein foods - meat, eggs, and milk - which should enter largely into the dietary. In acute bronchitis the appropriate diet varies in accordance with the severity of the catarrh, the more serious cases being practically broncho-pneumonia. If moderately severe, the diet should be restricted to such articles as milk, beef-tea, custard, jelly, and wafers of toast. In less serious cases all that is required is to give the patient a simple and nutritious light diet, consisting of milk and milk-products, bread or toast, fish or chicken souffle, sweetbread, and light farinaceous or fruit pudding. Greater restrictions may be necessary in those cases where the acute bronchitis is an incident, as it often is, in a case of marked chronic bronchitis and emphysema with a weak heart (see Chronic Bronchitis).