Be very careful when flexing, extending or rotating the neck that too much strain is not brought to bear upon the ligaments. Some osteopaths seem to take delight in rotating and flexing the neck to a great degree. It is a dangerous procedure and moreover does not accomplish anything in particular. It should be kept in mind that osteopathic treatment is scientific and not a number of general movements of various regions of the body. Locate the lesions exactly and then a specific treatment can be given in every instance. To illustrate the treatment according to the preceding rules we will assume that a certain cervical vertebra is anterior, say the fourth cervical. This means that there is an interosseous lesion between the fourth and fifth. The inferior articular processes and facets of the fourth have slipped upward and forward on the opposing facets of the fifth. First, hyperextend the head in such a manner that the fulcrum comes exactly over the displaced articulating planes, thus throwing the fourth vertebra still more anterior, or in other words, exaggerating the lesion or increasing the space anteriorly between the fourth and fifth cervicals, so that when the head is flexed forward and pressure is exerted upon the anterior part of the vertebra (body or transverse process) the vertebra will have room and release enough to occupy its normal position. Second, when the head is hyperextended place a finger anterior to the transverse process of the dislocated vertebra and with the other hand around the head, that is producing the hyperextension, throw the head forward with slight traction and rotation and at the same time push posteriorly quite strongly upon the dislocated vertebra. Follow out the same principles in all cases, no matter in which way the vertebræ are deranged. There are several methods of applying the underlying principles of adjustment. Relaxation and leverages may be secured in various ways. Preciseness, expeditiousness and skillfulness can be attained only by considerable personal experience. In cases where the lesion is between the skull and atlas have the patient sit on a stool with the back part of his head against your chest, and reach around the head with one hand under the chin; then with the other hand around the transverse processes of three or four upper cervical vertebræ pull the spinal column toward the median line, while at the same time lifting up on the skull with the other hand and throwing the skull toward the median line. The object of lifting up on the skull is to relax and disengage the articulations, by inhibition, traction and rotation, between the occipital bone and atlas. This is one method applicable to the various lesions of the occiput, which are of frequent occurrence.