The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1885-1921, 1907-05-20
SOME POPULAR
FhLLhCIES EXPECTED
Continued nom Page onel

/ sphere of action TO be thoroughly steril-
lied before passing away or being in
| hailed by the occupants.
1t may be wen TO notice that the
| air from the breath rises naturally on
account of its warmth. Gas burners
are IN almost all cases located above
| the level Of the head. They therefore
take the air after it has passed through
| the lungs, not before, and hurry it
along directly and positively to the
openings available
In the case Of electric lighting, in
order to insure the complete renewal
of air throughout the building as often
as in the case of gas lighting, separ-
ate motive power for fans, etc, should
| be used.
ALLEGED IMITATION OF AIR.
While it is true that an open gas
fame will give off more earbonic acid
than the electric light, the air eur
rents produced with the former will
carry of not only all Of this earbonic
acid but also that exhaled by the oe-
eupants Of the room, together with its
attendant impurities This fact has
been established by the experiments
of DR.. Percy FARMLAND in his analyses
of the air in the Birmingham, England,
Art Gallery. This gallery was lighted
with ineandescent gas lights, provided
with ventilators overhead. It was fear
ed by some that the use Of gas might
cause an injury TO the pictures and
that electric light should be SUBSTITUTE
ed. DR.. FARMLAND was therefore call
ed upon to test the air of the gallery,
-fa) When no lights were In use, b.
When electric arc lights were used,
lei When ineandeseent gas lights were
ii use. The results he found were as
follows:
(a) In the absence of artificial IL
Illumination, there was slight increase
in the amount of carbonie acid during
the day.
OBJ When electric lamps were used
this increase was distinctly more
marked.
(c) When ineandeseent gas was used
the amount of earbonie acid was less
than when there was no light at all
This showed very plainly the value
Of gas burners, when properly placed,
as assistants in ventilation.
Dr. ". A. Aiken, in the British
Medical Journal. writing upon the
change Of lighting Of large halls, etc,
from coal gas to electric, communicates
the following: fThe atmospheric con-
ditions are now quite different, for the
whole contamination Is the effect Of
human exhalations such air
becomes unfit for respiration much
earlier than when earbonic acid alone
has to be considered, and the neees-
sarv air change is certainly retarded
by the absence Of gas burners.
The alleged vitiation Of the air some
times claimed IN the use Of gas Is.
therefore, in properly ventilated rooms
falIaev.
EXTRACTION OF OXYGEN FROM
THE AIR BY GAS LIGHTS.
That oxygen is taken from the AZ
and utilized IN the oxidation Of the
constituents Of the gas Is. as IN the
case Of all processes Of combustion.
human or otherwise. at onee conceded.
But the withdrawal of oxygen from
the air by ineandescent gas lights is
infinitesimal as compared with the
cubfcaI area Of the space Ighted-sav
about IL feet OF oxygen per cubic
foot Of gas consumed. about 5-10 per
cubic foot Of which Is replaced bv
resultant earbonie acid. the bulk Of
the remainder being transformed into
water vapor. thus inducing currents Of
fresh air into the apartment 10 take
its place. Were it possible TO con
eeive an apartment, the atmospheric
conditions of which were such as 10
render appreeiable te the occupants
the abstraction Of 50 small quantity
of atmospheric oxygen as that above
mentioned. such an apartment would
not lie habitable Inasmueh as IN no
room or apartment to be tenanted by
human beings should the air Be re
nawed less than from two 70 three