PARENTAL GOOD, OR VERY GOOD, gives corresponding innate vigor and energy, or that heart and bottom which wears like iron, and bends, willow-like, without breaking, and performs more with a given size, than greater size, and less inherent "snap;" and gives thoroughness and edge to the mentality, just as good steel, well tempered, does to the tool. PARENTAL FAIR gives a good share of the presiding qualities, yet nothing remarkable; with acquired good endures and accomplishes much; without it, soon breaks down. PARENTAL POOR leaves its subject poorly organized, bodily and mentally, and proportionally low in the creative scale. [Illustration: No. 45. EMERSON, AN IDIOT.] ACQUIRED GOOD enables whatever of life power there is, to perform all of which it is capable; with parental good, furnishes a full supply of vital power, and that activity which works it all up in mental or physical labor. With parental very good, puts forth a most astonishing amount of effort, and endures wonders without injury; possesses remarkable clearness and wholeness of mind; thinks and feels directly to the purpose; gives point and cogency to every thing; and confers a superior amount of healthy intellectuality, morality, and mentality, in general. ACQUIRED FAIR, with parental average, gives fair natural talents, and mental and physical vigor, yet nothing remarkable; will lead a commonplace life, and possess an every-day character, memory, etc.; will not set the world on fire, nor be insignificant, but, with cultivation, will do well. ACQUIRED POOR will be unable to put forth its inherent power; is weak and inefficient, though desirous of doing something; with parental good, may take hold resolutely, but soon tires, and finds it impossible to sustain that powerful action with which it naturally commences. 25.--STATES OF THE NERVOUS SYSTEM. A good nervous condition enables its possessor to put forth sound and healthy mental and physical efforts; gives a calm, quiet, happy, contented frame of mind, and a strong tendency to enjoy every thing--even the bad; makes the most of life's joys, and the least of its sorrows; confers full possession of all its innate powers; and predisposes to a right exercise of all the faculties. Disordered nerves produce an irritated, craving, dissatisfied state of mind, and a tendency to depravity in some of its forms, with a half paralyzed, lax, inefficient state of mind and body. 26.--SIZE OF HEAD AS INFLUENCING CHARACTER.