It is fortunate that disease promotes impressibility, for it enables the sick to be relieved by manipulation, and it causes medicines to operate more efficiently upon morbid constitutions or organs, which has been fully demonstrated by the Homoeopathic School of therapeutics. But impressibility does not imply disease, although it may make the system more accessible to slight morbific agencies. We find individuals occasionally, of the highest tone of health and bodily vigor, who are highly impressible. Nor does it imply mental weakness, for it is highly congenial to intellectuality, and is occasionally found among the strongest and most cultivated minds. Nervous Impressibility is that condition in which the nervaura has a powerful influence--in which the action of the brain and all the vital functions of the constitution may be controlled and indefinitely changed by the application of the hands of another individual--in which we are susceptible of being totally revolutionized in character by application of the fingers to the various organs, so as to become, for the time being, miserable or gay, philosophical, felonious, murderous, angry, stupid, insane, idiotic, drowsy, hot, cold, credulous, sceptical, timid, courageous, vain, indolent, sensual, hungry, diffident, haughty, avaricious, etc.; and in which the muscular strength, secretions, circulation, pulse, respiration, senses, and morbid or healthy conditions of the frame may be changed or controlled by the nervaura emitted from the hand of the operator acting upon the brain of the subject. The number of individuals who can be thus affected is different in different places. In southern climates they are more numerous than in northern--in the pleasant weather of summer more than in winter--in lecture rooms, ball rooms and places of fervid religious worship, more than in the street and market place, where the intellectual and moral faculties are less predominant. In the Southern States of the Union, thirty or forty per cent. of the population will give at once distinct evidence of impressibility. In the more northern, about ten per cent. will give indications of an influence from the hand. A moderate degree of impressibility which is almost universal in the South, belongs to more than half in the North. Impressible subjects may be selected by the development of the organs of Impressibility, and the general predominance of the frontal and coronal regions of the brain over the occipital. The qualities already mentioned as favoring impressibility may be studied in the character, or observed in the development, as they occupy the entire anterior half of the head, giving _breadth to the temples_, with height and projection to the forehead. An enlarged pupil of the eye will be one of the best symptoms, and, in connection with a calm, spiritual, gentle expression of countenance rarely fails to indicate impressibility.