and the long head of the biceps medially and the surgical neck of the humerus externally, and the circumflex nerve can be easily palpated along with the artery. If these structures are stretched and the deltoid lifted from the shoulder it will be found to free the action of both nerve and artery, one supplying the joint with nutrition and the other innervating it. Certain conditions for which these movements are contraindicated arise and the following differential points by H. Glasscock are well to remember[44]: =“Rheumatism=: Fever in the joint, with redness, swelling and other joints involved. =Tuberculosis=: Daily temperature and other tubercular foci. =Neuritis=: Pain in the neck and shoulder muscles, also near insertion of deltoid and in the forearm, particularly musculo spiral. Pain worse at night. No pain on movement. No swelling. =Bursitis=: No pain in neck. Pain in anterior and posterior part of joint and on motion. Pain near insertion of deltoid. Arm held close to the body, motionless. =Infection=: Chill, limited motion, severe pain with temperature. =Dislocation=: Deformity with preternatural mobility. =Dislocation= of =acromio-clavicular= joint: Tenderness over articulation. Arm cannot be raised beyond right angle with the body, but elbow may be brought across the chest with external rotation of arm and raised perpendicular with the body without pain.” The infected joint should never be manipulated and all conditions showing swelling, redness and pain on touch should be viewed with suspicion. Remember that all other conditions will almost invariably have vertebral lesions, primary or secondary and a permanent result will depend upon their correction. The Prominent Hip