In the course of this treatise we have alluded to the Temperaments of different individuals, and it may therefore be interesting to describe them. A person of a Lymphatic temperament has a languid, good-natured look, sleepy eyes, and the face is soft, round and full. A Sanguine temperament is represented by an earnest, anxious countenance, large intelligent eyes, prominent nose, robust health, and a strong constitution. The Bilious temperament usually presents a strong marked countenance, yellow skin, bulging eyes, projecting lips, full muscular habit, and not very fleshy. Persons of Nervous temperament are usually (though not always) thin and spare: their features are firm set, lines of countenance harsh, constitution delicate, and intellectual qualities of the first order.

Men of genius may be ranked as follows: Sanguine-nervous are usually great writers, divines, musicians, or artists. Sanguine-bilious, great generals, politicians, statesmen, inventors, business men, or distinguished in any calling requiring much energy and industry. Sanguine-lymphatic are frequently persons of great talent, enterprise, and distinction, and are generally long lived; but they seldom make any considerable display of their abilities, or become men of mark.

Lazy, inefficient and irresolute people, are in most cases constitutionally so from a lack of sanguinity in their temperaments. Some men and women are so constituted that they never can rise above drudges in society; for if they are industrious they have no confidence in themselves.