Evening star. [volume] (Washington, D.C.) 1854-1972, 1930-01-04

The next half century will see the
practical elimination of three Of the
greatest scourgeS Of the human race,
in the opinion of medical authorities
who have studied recent scientific
developments.
ricketts,, disease Of childhood, which
warpS and weakens bones, can be con-
of natural sunlight, rich in ultra
violet rays. into every corner Of every
room in every home.
tuberculosis will be rendered impo-
tent by the construction OF homes in
which there Is plenty of clean air and
sunlight.
Hay fever, asthma and kindred all
ments will vanish when 1t becomes pos
sible for the victims to live and work
in atmoSpheres uncontaminated by the
pollen and dust particles that cause
those conditions.
Houses without Windows.
Modern science declares that all this
is possible today and predicts near
future when no one would consider
working or living under air and light
conditions now accepted as unavoidable.
Paradoxical as it may seem, the
house which will be lighted by sun
light will have no windows except, per-
haps, q few at convenient locations to
provide views Of the outside, and these
probably will be constructed so that
they cannot be opened.
Pure air, properly Inundated and
heated or cooled to the proper tenn
perature, will be delivered in every
room by ventilating equipment which
will eliminate germs and dust particles.
Dr. Frank E. Hartman, Chicago
physicist, writes: Few school rooms
and practically no large Offices and
workshops can be uniformly Illuminated
by windows. Much of the complaint
of improper heating during Winter Is
due to the disturbing influence of the
glass 1t is difficult to locate direct
radiation effectually when large glass
surfaces are encountered.
Economic Factor Cited.
"The best of mechanical ventilation
must ultimately suffer the fault Of poor
air distribution, due to the disturbance
of the thermal equilibrium occasioned
by the presence Of windows. Economi-
cally, windows have much to answer
for. The flow of heat through them
creates a fuel consumption that our
resources cannot indefinitely endure.
They are a disturbing element in the
proper designing of ventilating systems
not only due to thermal disturbances
but to their tendencies toward leakage,
which renders 1t economically imprac-
| tical to carry on air pressure in the
house sufficient to exclude the uncon-
ditioned air of the street.
"As q mental disturber in schools and
| Offices, source of noise and distrac-
ton, they contribute considerably to
economic loss, while the temptation to
open them and let In fresh air has
done more to retard scientifically cor
rect ventilation than any other single
| factor"
Window Light Defective.
| AS source OF illumination windows
| are hardly more efficient. Located as
| they must be In vertical positions on
| side walls, they receive during most Of
| the day only diffused or reflected light.
| m cities much of this is cut of by the
height of adjoining buildings. Even If
provided with transmission glass, per-
hitting the entrance of the ultra violet
ray so necessary to health and the one
agency necessary, in addition to proper
diet, to conquer ricketts, in children,
only O small portion of q room could
| receive these rays during q small pof-
! ton of the day. The ordinary street
offers no rejecting surfaces suitable for
| rejecting skylight into such windows.
The projection lantern and the ordi-
nary CatlcEb nave SHOWH ILlhL HBnJ can
| be concentrated, diffused and reflected.
| Plans now are being made for a
windowless experimental laboratory In
| which DR.. Hartman hopes to study the
| physical properties and physiological
| effects of air under what might be
considered as ideal conditions of VEN
| tilation.
| This laboratory will be flooded by
sunlight and skyShine, which also con-
tains the important ultra violet rays,
| through small bull-eyes with convex
lenses located at convenient places
along the outer wall and near the CELL