of new spatial rhythms--made possible by the advance of mathematical
science--that the author pleads. Artists, architects, designers,
instead of chewing the cud of current fashion, come into these
pastures new!

[Illustration]

[Footnote 1: The eight cubes in A, Figure 14, are as follows:
abb'd'c'c; ABB'D'C'C; abdDCA; a'b'd'D'C'A'; abb'B'A'A; cdd'D'C'C;
bb'd'D'DB; aa'c'C'CA.]

[Footnote 2: The sixteen cells of the hexadehahedroid are as follows:
ABCD: A'B'C'D': AB'C'D': A'BCD: AB'CD: A'BC'D: ABC'D: A'B'CD': ABCD':
A'B'C'D: ABC'D': A'B'CD: A'BC'D: AB'CD': A'BCD': AB'C'D.]

HARNESSING THE RAINBOW

Reference was made in an antecedent essay to an art of light--of
mobile color--an abstract language of thought and emotion which should
speak to consciousness through the eye, as music speaks through the
ear. This is an art unborn, though quickening in the womb of the
future. The things that reflect light have been organized aesthetically
into the arts of architecture, painting, and sculpture, but light
itself has never been thus organized.

And yet the scientific development and control of light has reached a
stage which makes this new art possible. It awaits only the advent of
the creative artist. The manipulation of light is now in the hands
of the illuminating engineers and its exploitation (in other than
necessary ways) in the hands of the advertisers.

Some results of their collaboration are seen in the sky signs of upper
Broadway, in New York, and of the lake front, in Chicago. A carnival
of contending vulgarities, showing no artistry other than the most
puerile, these displays nevertheless yield an effect of amazing
beauty. This is on account of an occult property inherent in the
nature of light--_it cannot be vulgarized_. If the manipulation of
light were delivered into the hands of the artist, and dedicated
to noble ends, it is impossible to overestimate the augmentation of
beauty that would ensue.

For light is a far more potent medium than sound. The sphere of sound
is the earth-sphere; the little limits of our atmosphere mark the
uttermost boundaries to which sound, even the most strident can
possibly prevail. But the medium of light is the ether, which links
us with the most distant stars. May not this serve as a symbol of the
potency of light to usher the human spirit into realms of being at the
doors of which music itself shall beat in vain? Or if we compare the
universe accessible to sight w