This is also known as cyclic vomiting and periodical vomiting. It is characterized by recurrent attacks which may be weeks or months apart. They come on without any apparent cause and from the descriptions and explanations given in medical science very little can be done medically to control the vomiting which at the end of two or three days will cease spontaneously. The attacks recur at different intervals, usually less often, gradually decreasing until they cease altogether when the patient is about the age of ten or twelve years. Symptoms There is loss of appetite and malaise. The pulse becomes rapid and in some cases there is slight temperature. There is usually headache and excessive thirst. During the attack of vomiting there is extreme retching and great distress. The symptoms are similar to migraine in adults. This condition must be differentiated from tubercular meningitis in which there is vomiting without apparent cause. The course of the symptoms will soon enable a positive differentiation. In acute indigestion there is vomiting, but the history of the case reveals the fact that the attack was brought on by undigested food. It is very easy to distinguish this type of vomiting from that of appendicitis, since in appendicitis there is marked tenderness at McBurney’s point, also pain and the characteristic rigidity and muscular contraction. In intussusception the symptoms are usually more severe and there is blood and mucus in the stool. Major Adjustment Since there seems to be no particular indication of indigestion or impaired functions, and no pathological changes, it is evident that the function involved is that of motor. But regardless of the primary function that is interfered with a subluxation will be found at S. P. and in most cases there will be a hot box during the acute attack. The vertebra most commonly subluxated is the sixth dorsal. In most cases there is no combination and results will be obtained in a very short time by adjusting nothing but the S.P. subluxation. In the severe cases it may be necessary to adjust as often as once every six hours until the vomiting ceases. Ordinarily the vomiting will cease in a short time and in most cases marked improvement will be noted after the first adjustment. Vomiting occurs in gastric indigestion, intussusception, meningitis, peritonitis, pyloric stenosis, uremic poisoning, and in many other acute incoördinations. CONSTIPATION The first bowel movement after birth is known as meconium and is a dark brownish-green color, and of a semi-solid consistency. During the first two or three days the bowels move from four to six times daily. On the third day the character of the stools begin to change and by the fourth day the feces has become normal.