To the physician three fields of work present themselves, in which he may spend his time and strength. He may devote himself to the study of the normal and morbid conditions of the human system, simply for the satisfaction received in learning; he may direct his attention to the cure of diseased bodies; or, his thought may be occupied in discovering and making known the cause of sickness.
There is, perhaps, no other one disease about which there is so much disagreement among doctors, as diphtheria. It is not my intention here to discuss especially the identity or non-identity of diphtheria, and membranous croup. Neither do I propose to look for those minute forms of life, which one sees so clearly, and another observer says do not exist, save in the mind of the enthusiast. Nor shall I ask the reader to investigate with me, at present, whether we should