The following cases of occlusion of the esophagus of non-traumatic origin have been under my care in the wards of the Children's Hospital. The rather unusual occurrence of the condition in my experience and the importance of recognizing which type we are dealing with, on account of prognosis and treatment, are my reasons for reporting them. Considering the rarity of the condition it is to be noted as a coincidence that during Dr. Morse's service, preceding mine, three cases of esophageal narrowing entered the same wards and have been reported by him.
—The first case is that of a boy 25 months old. The labor was normal and the infant was normally developed. He was fed on breast milk for the first seventeen months. From birth he had always vomited, from four to six times daily. The vomiting had always occurred during the feedings and was never forcible.