We have now fully demonstrated that in his scientific delineation of character the professional phrenologist depends upon something more than mere configuration of skull. The great modifying conditions of health, quality and temperament in every case give us the foundation of the character. It will be seen, some medical authorities to the contrary, notwithstanding, that the science of Phrenology has a firm basis on the established principles and known facts of Physiology and Anatomy. Bearing these facts in mind we will now proceed to the discussion of the scientific principles governing the phrenological examination of SIZE AND CONFIGURATION OF BRAIN, or the theory of the localization in different organs of the brain of the corresponding faculties of the mind. THE BRAIN is the key-board of the body. It is an error to claim that it is the exclusive organ of intelligence. The brain performs substantially the same function for the body which the key-board does for the piano, or which the central office of the telephone system performs for its various subscribers. Magnetism received from the exterior of the body is transmitted to the brain where it produces a result. This result in turn is transmitted to various portions of the body. Properly, therefore, intelligence is distributed over the entire body and the amount of intelligence which any individual possesses will be found to be in exact proportion to the size and quality of his body and the perfect adaptation, co-operation and adjustment of its parts. The brain is an oval mass of soft tissue which completely fills the internal cavity of the skull. It is composed of two substances, a white fibrous substance which forms the internal portion and a gray, cortical tissue which forms the external layer. This gray substance lies in folds or convolutions, the furrows or sulci, dipping deeply into the interior of the brain. [Illustration: Brain with Skull Removed.]