For purposes of educational and vocational guidance we now need especially studies of the relationship between general intelligence and kinds of drawing other than the representative. We require studies of the extent to which copying, analytical drawing, symbolic drawing, and caricature are correlated with general mental capacity. It may be predicted with some confidence that research in unselected groups will finally show copying and representative drawing to be slightly correlated with general intelligence. Analytical and symbolic drawing are probably significantly correlated with general intelligence, while caricature is doubtless very closely correlated with intellectual capacity. We need also researches bearing upon the relationship between ability in painting, sculpture, and pattern-cutting, and general intelligence. To what extent are painters and sculptors of high repute also gifted with superior intellectual acumen? Popular opinion would have it that the “artistic mind” is antagonistic in its organization to the “scientific mind.” Probably here as elsewhere uncontrolled speculation leads to false conclusions. Probably those who achieve eminence in the arts are, on the whole, as highly endowed with general intelligence as are those who win eminence in other kinds of careers. Greatness in graphic portrayal almost certainly results only when there is a rare combination of highly specialized capacity for representative drawing, and very high IQ, in the same individual. Fortunately for all, modern life calls for all forms of talent in drawing, in all degrees of combination with general intelligence. Sign painters, copyists, designers, draughtsmen, architects, illustrators, and creative interpreters of human faces and of human life are all needed. Persons skilled in drawing are essential to mechanical and industrial development in society, for everything made must first be drawn, from the motor of an airplane to the fancy buttons on a child’s coat. V. THE COLOR-BLIND Between 3 and 5 per cent of boys, and apparently fewer girls, inherit a special defect of vision, called “color blindness.” A color-blind child may be gifted in drawing, except in color drawing, but he will be incompetent as a painter. There are several forms of this special defect. Very rarely it may happen that no discrimination among colors is possible, the world appearing, as in a photograph, to consist only of light and shade. In the late evening, or in any sufficient dimness, color is not perceived by ordinary eyes. Those who are blind to all colors do not see color with the brightening of the light, as ordinarily happens.