Definite principles should be followed when applying the technique, for the osteopathic lesion is a “structural perversion,” thus indicating mechanical readjustment for its correction. The time is coming when the technique will be taught graphically and mathematically. This would not be a difficult thing to do, and it could not but prove invaluable aid to the student. He can then the more readily and comprehensively grasp the principles involved. To resolve and illustrate manipulative readjustment to and by the principles of mechanics would add considerable to osteopathic development. For example, how nicely the correction of certain innominata maladjustments illustrates the principle of the wheel and axle. Vertebral and rib displacements when readjusted make application of the principles of the simple machines. We are gradually approaching a more comprehensive understanding of the physiologic movements of the spine and of the etiologic role of muscle tension. This is part of the foundation work. Great care must be exercised in correlating this data with the individual case, for in therapy we are dealing with abnormalities—not alone normal physiologic changes. If our distinctive dynamics and therapeutics were taught in this manner the average osteopath would be more specific and comprehensive in his work and as a consequence more scientific. And consequently the principles involved in each and every case would stand out clearly. Hence diagnosis would be more exact, routine pommeling discarded, and better all around technique executed.