The subject, a young man, S. M. B., oet. 22 ; single ; a native, and, until recently, a resident of Rehobolh, Mass. His parents are living and healthy. He had, previously, generally enjoyed good health. In early life he had had frequent croupy attacks, though of not unusual severity. A sister had suffered from pretty severe attacks of croup, every winler, up to the ago of 12 years. Con-