all kinds of variety in the texture, quality, thickness, and even pattern of the glass, and also almost every variation of density and transparence. It is a palette of extraordinary range, perilously serviceable in the hands of an ambitious person of meagre knowledge and feeling, quite susceptive of commonplace exploitation in those of the ordinary designer. But in the hands of a true artist, who thinks in colour, and has a store of gathered observations backed with scientific assurance, it permits the fullest scope to his imagination, and the opportunity of realizing the most diverse and complex schemes of colour, allowing him to reproduce much of the mystery that time has wrought into the mediæval stained glass, and to add to the latter’s chantlike simplicity of colour and structure the complicated harmonies of modern music. It is an art, indeed, that brings the decorator within measurable distance of the musical composer. The new intent of this glass and the subsequent developments which have made of it a new fabric were so much the outcome of La Farge’s personal need of expression that it is not surprising he has reached results superior to those of others who employ the same medium. A reason which also contributes to his superiority is that his conception from the start formulates itself in colour, whereas the genesis of most windows would appear to be in the lineal design, clothed in colour afterward. In other words, like every true craftsman, La Farge thinks in his material. The effect of this has been, at least, twofold. In the first place, there has always been a reciprocity of influence between his imagination and his material; while he has been big enough to anticipate the possibilities, he has been big enough also to accept the limitations of the medium. In the second place,--and this really follows from the former,--he has preserved an independence in the character of the design, neither attempting to reproduce that of the old cathedral windows, nor dipping, except occasionally, into that universal cook-book of the average designer, the ornament of the Renaissance. With a larger sense of fitness he found, if anywhere, a prototype for his motives in Eastern art, not only in the mosaics of Byzantium, but in the jewelled inlays, lacquers, textiles, and _cloisonné_ of Japan. Particularly is this true of the windows of pure decoration which he has executed for private houses and again of those superb windows in the west end of Trinity Church in Boston. In these a cultivated taste will be disposed to feel that the splendour and mystery of the fabric are most abundantly manifested. It is pure decoration of the most subtle and resplendent kind.