5. CRANIOSCOPY.--In describing characters or constitutions, the new system is continually tested and demonstrated. All whom I have taught find, when they test it, that, in its applications by cranioscopy, the results invariably confirm the accuracy of the science. 6. CORRESPONDENCE.--Sarcognomy demonstrates in the body an entire correspondence to the system of functions and organs discovered in the brain. The same functions, on a lower plane and in corresponding locations, are found in the body. 7. APPLICATION.--In the application of the science, not only to the diagnosis of character and disease but to the solution of problems in human nature, the explanation of temperaments, the determination of relations between persons or sociology, the correction of education, the organization of philosophy, the criticism of literature, the philosophy of oratory and art, the development of a philosophic pneumatology and religion, and, finally, the study of the animal kingdom,--every application gives evidence of its competency and its truth as a supreme science and philosophy. MASTERING THE SCIENCE.--The large amount of detail of the organology of the brain which has been presented, will, no doubt, strike most readers with a sentiment of multitudinous confusion, and a doubt of the possibility of their ever applying so complex a science to the study of character. I have the pleasure of saying that the difficulty quickly vanishes when one is rightly instructed, and that I generally succeed in a single evening in making my pupils acquainted with the localities so well as to avoid any material error. The more perfectly any science is developed and understood the easier it becomes to impart its principles. In the next chapter I will show how easy it is to learn the organic locations of Anthropology and apply them to the judgment of character. TO YOU PERSONALLY.