Until he is three years old, for example, and often until he is past that age, he is unable to distinguish clearly between green, gray and blue; and hence these cool colors in the decorations around him, or in his pictures, have practically no meaning for him. He has a right, one might suppose, to the gratification of his love for clear reds and yellows, for the sharp, well-defined lines and flat surfaces, whose meaning is plain to his groping little mind. Some of the best illustrators of children's books have seemed to recognize this. For example, Boutet de Monvil in his admirable illustrations of Joan of Arc meets these requirements perfectly, and yet in a manner which must satisfy any adult lover of good art. The Caldecott picture books, and Walter Crane's are also good in this respect, and the Perkins pictures issued by the Prang Educational Co. have gained a just recognition as excellent pictures for hanging on the nursery wall. Many of the illustrations in color in the standard magazines are well worth cutting out, mounting and framing. This is especially true of Howard Pyle's work and that of Elizabeth Shippen Green. [Sidenote: Classic Art] Since photogravures and photographs of the masterpieces can be had in this country very inexpensively, there is no reason why children should not be made acquainted at an early age with the art classics, but there is danger in giving too much space to black and white, especially in the nursery where the children live. Their natural love of color should be appealed to do deepen their interest in really good pictures. [Illustration: "My Mary"] [Illustration: "Blow, Wind Blow" PERKINS' PICTURES] Nevertheless, it is a matter of considerable difficulty still to find colored pictures which are inexpensive and yet really good. The Detaille prints, while not yet cheap, are not expensive either, and are excellent for this purpose; but the insipid little pictures of fairies, flowers, and birds may be really harmful, as helping to form in the young child's mind too low an ideal of beauty--of cultivating in him what someone has called "the lust of the eye." [Sidenote: Plastic Art] What holds true of the pictorial art holds equally true of the plastic art. As Prof. Veblin of the University of Chicago has scathingly declared, our ideals of the beautiful are so mingled with worship of expense that few of us can see the genuine beauty in any object apart from its expensiveness. For this reason as well as, perhaps, because of a remnant of barbarism in us, we love gold and glitter, and a great deal of elaboration in our vases, and are far from being over-critical of any piece of statuary which costs a respectable sum. [Illustration: RELIEF MEDALLION By Andrea della Robbia, in Foundling Hospital, Florence.]