“…T h e suggestion that uremia may lead to increased energy requirements needs to be studied by paired feeding experiments, for, if substantiated, it might mean that the estimated calorie requirements of the child with uremia are greater than realized. Paired feeding studies on acidotic rats [5] have demonstrated considerably increased energy requirements, and this would be one factor to be investigated in further experiments using this model. I t is hoped that the model developed in the present experiments will prove useful in investigating the various factors such as hypertension, acidosis, osteodystrophy, hormonal alterations, protein calorie malnutrition, etc.…”