rich and susceptible to as beautiful treatment as ornamental
carvings on the stone or the ornamental work on the terra cotta
of the elevation. At the same time, by this treatment the
light-giving capacity of the opening is increased from five to
twenty-five times, according to its position in the building.
By reason of the raised surfaces of this product and the reflecting
action of the receiving surfaces, or their prismatic quality, these
window plates appear to a greater or less degree to take on color
from the surrounding material, or, at least, to be so affected by
it as to produce a distinct coloring and tone as distinguished from
the ordinary window glass. In this way incidental effects,
beautiful in themselves, are invariable produced by local color
conditions. When Luxfer Prisms are mounted as canopies or
foriluxes, another incidental and brilliant effect is produced
by the reflection of the prisms in the plate glass of the window
underneath. When viewed from within these prisms are as plainly
a new building material as when viewed from without. By the
Iridian treatment a fine textile-like effect is produced, so
that the appearance of the product is that of a highly interwoven
crystal fabric, as delicate and brilliant as the most exquisite of
cut glass ware. Wholly new possibilities in modern building are
made distinctly probably by means of an intelligent use of this
new and susceptible building material. The Iridian product,
and the perfected scientific handling of its light-giving qualities
have rendered it highly susceptible from an architectural standpoint.
Luxfer Prisms are a new and distinct lighting medium, and as such
are applied to existing buildings, in appropriate fixtures
designed to do the work to the best advantage, and at the same
time to add an interesting element to the building from the
standpoint of design; not gas fixtures, nor electric light
fixtures, but daylight fixtures, quite as legitimate and far
more desirable.
We suggest that prism plates should be
used in all stories of a building for various reasons: First,
because they are stronger than glass and far less liable to
injury; second, because even in the stories where increased light
is not so essential, they give enough additional light to make
their use an economy, and deep offices, with well lighted
ante-rooms, are made possible by this means; third, because
they can be made
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