=Tetanus Neonatorum.=--Tetanus neonatorum, or _tetanus of the newborn_, a condition already alluded to, is a remarkably fatal affection, very prevalent among the negro race, especially in hot climates. It nowise differs from traumatic tetanus, but is such in effect, since the infection in these instances always follows the _division of the umbilical cord_, which is usually effected with dirty scissors in the hands of a dirty midwife, while the thread with which the cord is tied is itself a possible source of infection, as well as the rags which are used to cover the umbilicus in the first dressing. It is generally fatal, because of the weakness and lack of resistance of these little patients. It occurs usually within a week after birth, if at all. =Tetanus Cephalicus.=--Tetanus cephalicus, called also _tetanus hydrophobicus_ and _head tetanus_, is only a peculiar manifestation of this same affection, confined mainly to the head and usually following injuries to this region. The muscle spasms are mostly confined to the facial, pharyngeal, and cervical muscles, sometimes extending to the abdominal. These manifestations may be reproduced in animals by inoculating them on the head rather than upon the extremities. It is the least fatal form of the disease. =Symptoms.=--There is always a _period of incubation_, usually three or four days, occasionally a week in length, but rarely longer. It is generally held that the longer the period of incubation the more hopeful the prognosis. While for the great part the disease assumes an acute type, a chronic tetanus is described and occasionally seen. The _first warning_ of the disease usually comes as more or less _stiffness_ of the _cervical_ and maxillary _muscles_, which is likely to be referred to by the patient as a “sore throat,” because of the consequent difficulty in deglutition. A complaint to this effect should be regarded as a warning, especially if on inspection no visible reason for it can be detected in the pharynx. This complaint is usually made in the morning after an ordinary night’s rest. This muscle stiffness will be followed by increasing _tonic spasm_ in the _muscles of the jaw_, making it difficult to open the mouth, while the head and neck gradually become stiffened and fixed by spasm of the cervical muscles. These muscles may now be felt more or less rigidly contracted, as if by voluntary effort, and the condition, which is at first not painful, becomes after some hours a source of discomfort, perhaps of actual pain, to the patient. If the disease pursues the usual course, the other muscles of the body become gradually affected, usually in the order of their proximity, but not necessarily so. The _abdominal muscles_ are _firm_ and board-like, and the dorsal muscles more or less contracted, sometimes to an extent which causes arching of the spine. Should the original wound or port of entry for infectious germs have