ALTHOUGH hyaline-membrane disease, the respiratory-distress syndrome of the newborn infant, has been the object of increased clinical and research interest in the past ten years, little attention has been paid to its possible sequelae.^{1 , 2} It is stated that most of these infants who survive the first three days of life will recover completely, and by seven to ten days of life will have normal lungs radiographically.^{3 , 4} Recent experience with critically ill infants at the Stanford Premature Infant Research Center demonstrates that intensive therapy may modify the acute syndrome so as to permit the development of a previously unrecorded abnormality of . . .