practicable, which shut out the heat rays, but admitted the light. The use of this glass would overcome the last difficulty—the equalization of temperatures—and might easily result in buildings of an entirely novel type, the approach to which is seen in the "pier and grill" style of exterior. This is being adopted not only for commercial buildings, but for others of widely different function, on account of its manifest advantages. Cass Gilbert's admirable studio apartment at 200 West Fifty-Seventh Street, New York, is a building of this type.

In this seeking for sunlight in our cities, we will come to live on the roofs more and more—in summer in the free air, in winter under variformed shelters of glass. This tendency is already manifesting itself in those newest hotels whose roofs are gardens, convertible into skating ponds, with glazed belvideres for eating in all weathers. Nothing but ignorance and inanition stand in the way of utilization of waste roof spaces. People have lived on the roofs in the past, often enough, and will again.

[Illustration: PLATE X. RODIN STUDIOS, 200 WEST 57TH STREET, NEW YORK]

By shouldering ever upward for air and light, we have too often made of the "downtown" districts cliff-bound canyons—"granite deeps opening into granite deeps." This has been the result of no inherent necessity, but of that competitive greed whose nemesis is ever to miss the very thing it seeks. By intelligent co-operation, backed by legislation, the roads and sidewalks might be made to share the sunlight with the roofs.

This could be achieved in two ways: by stepping back the façades in successive stages—giving top lighting, terraces, and wonderful incidental effects of light and shade—or by adjusting the height of the buildings to the width of their interspaces, making rows of tall buildings alternate with rows of low ones, with occasional fully isolated "skyscrapers" giving variety to the sky-line.

These and similar problems of city planning have been worked out theoretically with much minuteness of detail, and are known to every student of the science of cities, but very little of it all has been realized in a practical way—certainly not on this side of the water, where individual rights are held so sacred that a property owner may commit any kind of an architectural nuisance so long as he confines it to his own front yard. The strength of IS, the weakness of should be, conflicting interests and legislative cowardice are responsible for the highly irrational manner in which our cities have grown great.

The search for spiritual light in the midst of materialism finds unconscious symbolization in a way other than this seeking for the sun. It is in the amazing development of artificial illumination. From a purely utilitarian standpoint there is almost nothing that cannot now be accomplished with light, short of making the ether itself luminiferous. The æsthetic development of this field, however, can be said to have scarcely begun. The so recent San Francisco Exposition witnessed the first successful effort of any importance to enhance the effect of architecture by artificial illumination, and to use colored light with a view to its purely pictorial value. Though certain buildings have since been illuminated with excellent effect, it remains true that the corset, chewing-gum, beer and automobile sky signs of our Great White Ways indicate the height to which our imagination has risen in utilizing this Promethean gift in any but necessary ways. Interior lighting, except negatively, has not been dealt with from the standpoint of beauty, but of efficiency; the engineer has preempted this field to the exclusion of the artist.

All this is the result of the atrophy of that faculty to worship and wonder which alone induces the mood from which the creation of beauty springs. Light we regard only as a convenience "to see things by" instead of as the power and glory that it inherently is. Its intense and potent vibrations and the rainbow glory of its colour beat at the door of consciousness in vain. When we awaken to these things we shall organize light into a language of spontaneous emotion, just as from sound music was organized.

It is beside the purpose of this essay to attempt to trace the evolution of this new art form, made possible by modern invention, to indicate what phases it is likely to pass through on the way to what perfections, but that it is bound to add a new glory to architecture is sure. This will come about in two ways: directly, by giving color, quality, subtlety to outdoor and indoor lighting, and indirectly by educating the eye to color values, as the ear has been educated by music; thus creating a need for more color everywhere.

As light is the visible symbol of an inner radiance, so is color the sign manual of happiness, of joy. Our cities are so dun and drab in their outward aspects, by reason of the weight of care that burdens us down. We decry the happy irresponsibility of the savage, and the patient contentment of the Oriental with his lot, but both are able to achieve marvels of color in their environment beyond the compass of civilized man. The glory of mediaeval cathedral windows is a still living confutation of the belief that in those far-off times the human heart was sad. Architecture is the index of the inner life of those who produced it, and whenever it is colorful that inner life contains an inner joy.

In the coming Golden Age life will be joyous, and if it is joyous, colour will come into architecture again. Our psychological state even now, alone prevents it, for we are rich in materials and methods to make such polychromy possible. In an article in a recent number of The Architectural Record, Mr. Leon V. Solon, writing from an entirely different point of view, divines this tendency, and expresses the opinion that color is again renascent. This tendency is so marked, and this opinion is so shared that we may look with confidence toward a color-evolution in architectural art.

The question of the character of what may be called the ornamental mode of the architecture of the New Age is of all questions the most obscure. Evolution along the lines of the already existent does not help us here, for we are utterly without any ornamental mode from which a new and better might conceivably evolve. Nothing so betrays the spiritual bankruptcy of the end of the Iron Age as this.

The only light on this problem which we shall find, dwells in the realm of metaphysics rather than in the world of material reality. Ornament, more than any other element of architecture, is deeply psychological, it is an externalization of an inner life. This is so true that any time-worn fragment out of the past when art was a language can usually be assigned to its place and its period, so eloquent is it of a particular people and a particular time. Could we therefore detect and understand the obscure movement of consciousness in the modern world, we might gain some clue to the language it would later find.

It is clear that consciousness is moving away from its absorption in materiality because it is losing faith in materialism. Clairvoyance, psychism, the recrudescence of mysticism, of occultism—these signs of the times are straws which show which way the wind now sets, and indicate that the modern mind is beginning to find itself at home in what is called the fourth dimension. The phrase is used here in a different sense from that in which the mathematician uses it, but oddly enough four-dimensional geometry provides the symbols by which some of these occult and mystical ideas may be realized by the rational mind. One of the most engaging and inspiring of these ideas is that the personal self is a projection on the plane of materiality of a metaphysical self, or soul, to which the personal self is related as is the shadow of