The studies which we are carrying on at the Infants' Hospital in cases of chronic indigestion from fat do not yet include a sufficient number of cases to permit me to present a mass of statistical evidence from which positive conclusions can be drawn. It is difficult to accumulate evidence of final value in a clinical study of this kind. So many cases cannot be investigated as thoroughly as we could wish, and there are so many adventitious circumstances which interfere with the value of our conclusions, that I realize that the evidence they afford is at best but a general impression, not supported by real proof. At present, all I can do is to describe the method which we are employing, and to state the provisional conclusions which we have formed at the present stage of our investigations.
The diagnosis of chronic indigestion from fat is based on the