This incoördination, according to Holt and Howland, occurs only in infancy. It is characterized by muscular spasms in the larynx with marked dyspnea. Symptoms There may be complete arrest of respiration for short periods, during which there will also be a marked lack of oxygenation of the blood. There may be recurrence of these attacks several times a day, and unless adjustments are given may last for weeks. There may be general convulsions and carpopedal spasms which are spasmodic contractions of the joints of the hands and feet. During the periods of arrested breathing the face becomes cyanosed. This terminates with a slight cough or a high-pitched crowing sound produced by the sudden inspiration of air. Because of this it is sometimes called “child crowing.” It is also known as thymic asthma and spasms of the glottis. * * * * * =Major Adjustment= The combination major is lower cervical and stomach place. Under adjustments results are obtained in a very short time, in many cases almost instantly. ACUTE CATARRHAL LARYNGITIS This incoördination is found in children from one to five years of age. It may be severe and even cause death. It may be a secondary condition following measles, scarlet fever, influenza and other like incoördinations; however, it may result directly and not be associated with any other condition. It is often aggravated by inhaling steam, gases or irritating dusts. There is congestion and inflammation of the mucous membrane lining the larynx; there is swelling and dryness of the membrane followed by an exudate which may become profuse. If the swelling is exaggerated there will be stenosis of the larynx. The vocal cords become swollen and produce aphonia. Symptoms The symptoms are hoarseness, dry metallic cough, which may become very severe and teasing. The onset is sudden with a marked tendency to cough, especially during the night. The voice often is entirely lost and the larynx becomes sore and painful. There is dyspnea and the respirations are short and shallow. In some cases which develop more slowly there will be coryza for a day or two preceding the severe attack, or the laryngeal symptoms may precede the acute symptoms. The onset, however, may be very rapid and the most severe symptoms be present within a very few hours after the manifestation of the first symptom. In the well developed, case the cough is dry, metallic, barking and stridulus. The inspiration is labored. The dyspnea is severe, occurring in paroxysms during the night. There is temperature, rapid pulse and increased respiration. If the inflammation extends down into the bronchi it will result in bronchopneumonia. Laryngeal obstruction may occur often and prove very severe.