This treatment is carried out as follows: The patient for one or two weeks eats nothing but oatmeal gruel daily, 250 grm. of oat flour, 250 to 300 grm. of butter, 100 grm. of Roborat or of some other vegetable albumen; this mixture is prepared as a soup and given at intervals of two hours. It is a remarkable fact that on this diet the excretion of sugar almost without exception falls below the quantity that was excreted on a mixed diet free from carbohydrates. We shall not enter into an elaborate discussion of this theoretically and practically important fact and refer for the details to the article by von Noorden on the Dietetic Treatment of Diabetes in Von Leyden's Handbook of Dietetic Therapy (Second Edition 1903) and the fourth edition of his monograph on Diabetes that will presently appear. We shall only mention the fact in this place that notwithstanding the administration of such exceptionally large quantities of butter, the excretion of acetone falls rapidly, so that in two or three days the total acetone secretion is about one-tenth of what it was before. If one resumes the ordinary diabetic diet afterwards, that is, after the acidosis has been done away with, one must be very careful to increase the quantity of food albumen very gradually, for otherwise the acidosis may suddenly return. It requires a certain amount of skill and experience to gradually resume the old diet without causing such a relapse. It is absolutely necessary to resume the old diet, because no patient can stand the monotony of the oatmeal treatment for any length of time. Von Noorden mentions a number of cases in which the acidosis was cured so thoroughly that for months afterwards only very small quantities of acetone were excreted in the urine. Such brilliant results, however, constitute exceptions. As a rule this much is attained; that all immediate danger from the acidosis is removed and the degree of acidosis remains below the danger point for weeks and months. This method has been employed in many cases of severe and very severe acidosis in von Noorden's clinic and the results have been excellent, so that we feel justified in declaring this treatment to be the best means at our disposal to-day for combating severe degrees of acidosis and for averting impending diabetic coma. The method is better than the milk cure that von Noorden himself formerly recommended in incipient coma and it is better than the potato cure of Mossé.