The brain is double. It is divided into two hemispheres by the _falx cerebri_, a partition which follows the middle line of the skull. Each hemisphere contains one organ pertaining to each faculty of the mind. The size of each organ is estimated, not by feeling for bumps or depressions, but by measuring the length of the fibres of the brain from their common center in the _medulla oblongata_, at the head of the spinal column, and at a point equi-distant from the ears in the interior of the head. From this common centre the fibres of the brain range horizontally and upward in all directions like the branches of a tree. Development of brain fibre laterally gives a wide head, longitudinally, from the _medulla oblongata_ to the forehead and to the occiput, a long head. Development upward raises the crown; and I have in my collection skulls which show by actual measurement a relative difference of over three inches in development of brain fibre to certain localities of brain surface. Viewed in the light of these facts and principles as here expounded, the phrenological position is established, and the childish objections of those who sneer at this beautiful science, fall crumbling to the dust. The last great fact to be considered is this: Exercise of any portion of the body develops it, enlarges it and adds to its strength. Disuse weakens, paralyzes and ultimately destroys. This rule applies to all parts of the body, and to the brain more particularly because the nervous tissue of which the brain is composed is more rapidly used up and renewed than any other portion of the body and hence more susceptible to change. Phrenology solves all problems of education and enables every individual to develop a symmetrical and well formed brain, and with it a harmonious character, by pointing out those portions that are deficient and those that are strong, and thus enabling him to secure a really well trained mind. By memorizing the different organs and their functions, particularly those in which you are marked as excessive or deficient, and by practicing the observation of your daily conduct and learning to analyze it phrenologically, _i. e._, to note those occasions when deficient faculties have failed to act, and when predominating faculties have caused you to act hastily or contrary to good judgment, you will soon become painfully aware of your true faults, and by a conscientious action of reason and exercise of self-control will be able to correct them. In the same manner predominating talents may be tested and proved and you will rejoice in the birth of new aspirations, hopes and impulses, in a word you may be, by means of this science, placed in full command of your mental powers and learn to control and direct them as the skillful engineer controls and directs his locomotive.