I do not mean to say that the child died hydrophobous, or that its death was accelerated by the nascent disease existing in the dog. There was probably some nervous affection that hastened the death of the infant, and the dog bit the child at the very period when the malady first began to develop itself. On the following day there were morbid lesions enough to prove beyond doubt that he was rabid. This case is introduced because I used afterwards to accompany every examination of supposed or doubtful rabies with greater caution than I probably had previously used. It is occasionally very difficult to detect the existence of rabies in its nascent state. In the year 1813, a child attempted to rob a dog of its morning food, and the animal resisting the theft, the child was slightly scratched by its teeth. No one dreamed of danger. Eight days afterwards symptoms of rabies appeared in the dog, the malady ran its course, and the animal died. A few days afterwards the child sickened--undoubted characteristics of rabies were observed--they ran their course and the infant was lost. There are other cases--fortunately not numerous--in the records of human surgery, resembling this. A person has been bitten by a dog, he has paid little or no attention to it, and no application of the caustic has been made. Some weeks, or even months, have passed, he has nearly or quite forgotten the affair, when he becomes languid and feverish, and full of fearful apprehensions, and this appearing perhaps during several days, or more than a week. The empoisonment has then ceased to be a local affair, the virus has entered into the circulation, and its impression is made on the constitution generally. Fortunately the disposition to bite rarely develops itself until the full establishment of the disease, otherwise we might sometimes inquire whether it were not our duty to exterminate the whole race of dogs. The following case deserves to be recorded. On the 21st of October, 1813, a dog was brought to me for examination. He had vomited a considerable quantity of coagulated blood. I happened to be particularly busy at the moment, and not observing anything peculiar in his countenance or manner, I ordered some astringent sedative medicine, and said that I would see him again in the afternoon.