COURSE AND TERMINATION.--According to Mackenzie, Von Ziemssen, and others, the anæsthesias following diphtheria usually terminate in recovery. It is quite possible, however, that the literature of the subject does not give us elements on which to base an opinion. I am inclined to think that cases die from this disorder in which the nature of the affection is never recognized. It is quite certain that paralysis of the fauces is not unattended with danger. It is also probable that in many of these cases the real danger is not so much from the loss of muscular power in the pharynx, and consequent inability to swallow, as from the fact that the larynx is not protected from the introduction of foreign substances, that the intrusion of these substances is not recognized, and the consequent disorders of the lungs become the cause of death more frequently than has been supposed. DURATION.--Paralysis of the sensory nerves of the larynx usually lasts only a few weeks. When a result of diphtheria it disappears with the motor trouble with which it is associated. As a complication of hysteria, or rather when hysterical in character, it may last indefinitely. When dependent upon changes in the centres from which the pneumogastrics are derived it has a history commensurate with that affection. The PATHOLOGY AND MORBID ANATOMY have been suggested in the discussion of the cause and symptomatology of the disorder. The question of the local or general changes in the diphtheritic variety is noted in the history of the disease. The DIAGNOSIS is made mainly by the examination with the laryngoscope. The probe will at once determine the presence or absence of the sensibility of the mucous membrane of the parts. In addition to touch, electricity may be employed. In these cases the alteration involves both the tactile and reflex sensory functions. There will therefore be neither cough nor spasm resulting from a mechanical irritation. The surfaces are usually quite normal in color and form. The epiglottis is erect, abnormally so, and there will often be more or less paresis, or even complete paralysis, of the other muscles of the organ. In some cases the difficulty in deglutition due to derangement of the reflex functions may be also suggestive of alterations of sensation in the parts within the larynx, but it is only a suggestion. The PROGNOSIS is usually favorable, but for the reasons given above this should be accepted with some degree of reservation. The diphtheritic varieties share in the uncertainty of other forms of paralysis in that disorder. The hysterical forms are not dangerous, but may continue so long as the primary affection persists.