Those who are large in the organ of color, are artists in its appreciation, for the simple reason that they have more sense in this particular direction. On the other hand, color may be large, but appreciation of form, size, etc., may be deficient. The individual may try to paint a picture and get the colors all right, but if form is deficient his figures will be grotesque in their absurdity; or he may have good sense as to form and color, and get the sizes of his objects all wrong. Mechanical skill depends in a great measure upon these "Perceptive Faculties," as they are called: that is, those portions of the brain that comprehend and give the ideas pertaining to the properties of material objects, such as individuality, form, size, weight, color, etc. The trained eye and hand of the blacksmith are alike directed by these faculties of the mind acting through these organs of the brain, as he moulds a piece of iron to the proper size and form to fit the horse's foot. What folly then to expect good work, in a blacksmith shop, of a man deficient in these special senses requisite in that department of work; and as we study all trades and professions we shall find that aptitude in any line depends on the possession of superior development of the organs of the brain representing the faculties of intelligence most used and depended upon in that business. There are those who are wonderfully gifted in the organ of calculation, the seat of the special sense of the number of things. One who has this organ large will be able to count rapidly and correctly, to add, subtract or multiply, and he understands the relation of numbers to each other, their properties, and because of his superior sense in this direction he becomes a "lightning calculator" and is regarded as a mathematical prodigy. There are others who have this sense deficient, but they may be superior in development to the mathematical prodigy in a dozen other faculties. One may be developed in those organs which contribute to talent for music. He may have a sensitive organization, highly responsive in quality, a fair intellect, such an exquisite sense of time and tune, aided by good Constructiveness, Imitation and executive ability that he is able to produce music which charms the listening ear of thousands. If this talent is discovered in time, and he has adequate instruction and advantages, he becomes a magnificent success. Place him in the counting room, the work-shop, or on the farm and he is not in harmony with his surroundings, he is awkward and inefficient, he does poor work and but little of it, and he is regarded by his associates as an inferior person. [Illustration: Musician.]