In the American Indian, the anterior lobe, lying between _AA_, and _BB_, is small, and in the European it is large, in proportion to the middle, lying between _BB_ and _CC_. In the American Indian, the posterior lobe, lying between _C_ and _D_ Is much smaller than in the European. In the Indian, the cerebral convolutions on the anterior lobe and upper surface of the brain, are smaller than the European. If the anterior lobe manifests the intellectual faculties--the middle lobe the propensities common to man with the lower animals--and the posterior lobe, the conservative energies, the result seems to be, that the intellect of the American Indian is comparatively feeble--the European, strong; the animal propensities of the Indian will be great--in the European, more moderate; while reproduction, vital energy, and conservation of the species in the Indian is not as great as with the European. The relative proportions of the different parts of the brain differ very materially.] By physical culture and regulation of the habits, the excessive tendencies of this temperament may be restrained. Solid food should be substituted for a watery diet. If it be limited in quantity, this change will not only diminish the size, but increase the strength of the body. The body should be disciplined by daily percussion until the imperfectly constructed cells, which are too feeble to resist this treatment, are broken and replaced by those more hardy and enduring. Add to this treatment brisk, dry rubbing, calisthenic exercises, and daily walks, which should be gradually extended. Continue this treatment for three months, and its favorable effects upon the temperament will surprise the most skeptical; if continued for a year, a radical alteration will be effected, and the hardihood, health, and vigor of the constitution will be greatly increased. This temperament may be improved physiologically, by being blended with the sanguine and volitive. The offspring will be stronger, the structures firmer, the organization more dense. Nutrition, assimilation, and all the constructive functions will be more energetic in weaving together the cellular fabric of the body. The sanguine temperament will add a stimulus to the organic activities, while the volitive will communicate manly, brave, and enduring qualities. When this temperament is united with the encephalic, if such a union does not result in barrenness, it adds _expending_ and _exhaustive_ tendencies to the _enfeebling_'ones already existing, and, consequently, the offspring lacks both physical power and intellectual activity.