Evening star. [volume] (Washington, D.C.) 1854-1972, 1930-10-12

less buildings, the problem of adding ultra
violet light to indoor illumination became Of
prime importance and such experiments are
now under way.
The use Of special glass which passes the ultra
violet rays of the sun has been used as method
Of providing this vital element for indoor
workers near . window but the remainder Of
the room still suffers from the lack of the rays.
Special glass would be most beneficial in the
Winter time, for that is Just the period when
people are indoors for longer periods than in
the Summer, but unfortunately, the sun does
not deliver a maj percentage of ultraviolet
rays at this season and the scant portion of
ultra violet rays which would be received does
not seem to justify the expense. Besides, it
is said that present habits keep people IN
the open air In the warmer months for periods
which give them a maximum benefit from the
vital rays.
The illumination experts have succeeded in
didusing electric light without shadow and
glare; they are able to supply it in daylight
shades, brilliant or mellowed with faint colors
as desired, and when they are able to perform
the trick of adding to 1t just the proper per-
centage OF ultra violet rays beneficial to health
from some form Of sun lamp, the problem Of
the windowless building viii be virtually solved.
THE future evolution Of artificial lighting will.
In all probability, deal with knowledge
and physical effects Of light on the human race
This comparatively new field Of study-termed
Eight biology" by German scientists attract
ing unusual attention throughout the world,
and numerous institutions have devoted con-
siderable resources to its study, both in America
and in Europe. The Smithsonian Institution,
In Washington, D. c., has created a dirT.1n Of
radiation and organisms, which, althc II at
present combining its attention to the effects OF
radiant energy on plant life, win later make
similar studies Of its effects on animal life
Artificial atmosphere conditions appeal strong.
~ to the sufferers from hay fever. Using q
newly invented apparatus which screens out all
pollen from the air, persons susceptible to hay
fever may work with ease in office free from
the irritating notes of protein
James A. Sullivan, q noted architect fore
casts the erection of blind" buildings. I'm
particular" he declares "tllis idea can be ap-
piled to department stores. We e NV PLAN
ming such structure. The feasibility Of the
idea as applied to stores win be readily seen,
for shops now supplied with windows generally
keep them shaded, as ordinary rays of light
give wrong impressions to persons trying to
match and determine shades while the right
type Of artificial lighting presents them
correctly"
That the most dificult problems in the way
of ventilation and providing healthful atmos-
phere can be solved IS suggested by the fact
that engineers have been able successfully to
operate plant to regulate temperature and air
in a gold mine at Nova Lima, Brazil, that is
more than 5000 feet below the surface of the
earth Here the temperature of the rocks is
about 100 degrees Fahrenheit and the moisture
content Of the air Is also high. The condition.
ing plant coolS and dries the air and Is the only
thing that makes 1t possible for men to work
in such location.
Having manufactured weather, it was only
a question of time before some scientist would
attempt to learn If he could make more
healthful atmosphere than the kind which ma
ture has provided for the human race.
DIR. J. Willard Hershey of Mcpherson College,
Kansas has been arranging atmospheres for
more than six years and IN report to his fell
low scientists he told what happened when he
subjected animals to various artificial atrnos-
pheres which he controlled s-S-
It has generally been supposed that the air
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