This organ gives the desire and the ability to enjoy mirth. Its possessors are apt to consider things in their most humorous light, to the neglect of their more sober characteristics. It is that principle of the mind, which enables one to detect what is absurd and ridiculous, and to delight in jokes, fun and laughter. Predominant.--With Mirthfulness predominant, one has an irresistible tendency to view every thing in a comical aspect. His most serious meditations are liable to be interrupted by mirthful intrusions; and he will indulge his humorous propensities, regardless of consequences. Large.--With Mirthfulness large, will have a lively perception of the ludicrous, and will be apt to catch up every little incident, and make it the subject of humorous remarks. With Destructiveness and Comparison large, he will be sarcastic, and severe in his jokes, and will laugh heartily at the discomfiture of others. If Secretiveness and Imitation are small, he will not be able to relate a joke with propriety, yet will enjoy one; but if Secretiveness, Ideality and Imitation are large, he will tell a story in the most refined and delightful manner; with Comparison and Love of Approbation large, and Causality and Secretiveness moderate, he will laugh excessively at his own jokes. Moderate.--With Mirthfulness moderate, one is fond of fun, but unable to make it. With Combativeness, Destructiveness and Comparison large, will be severe and pungent in his attempts at wit, and will thus often give offence. Small.--With Mirthfulness but small, one will be nearly destitute of the ability to enjoy a joke, and quite unable to make one. He will look upon wit as impertinent and silly, and be offended at jocose remarks. If Love of Approbation is large, he will be very much annoyed at jokes; with Combativeness moderate or large, will get highly offended at any attempts to do so. OBSERVING FACULTIES. 1. INDIVIDUALITY. The function of this organ is to recognise existences, or the identity of substances without reference to their peculiarities; it has been termed the memory of things. Its recollective powers are limited to simple details, or facts having no reference to their form, colour, &c. Predominant.--One in whom Individuality is predominant, will be distinguished for his powers of observation. No object will escape his scrutiny, and no opportunities will satiate his curiosity. If his reflective powers are weak, he will require a great mass of facts, but they will lie in his mind confused and unoccupied: he will be unable to employ them in illustration or argument. If in the habit of writing, his compositions will abound with personifications. If Causality is large, and Concentrativeness is small, his reflective powers will be weakened by the tendency imparted by individuality to dwell upon substances instead of causes.