Arizona republican., 1907-07-27
The latter part of

lines shall prove. The latter part of
the summer may become a little bit OF
drag on those who have been here
long time, not from the unhealthful-
ness or discomfort of any. particular
week or month. but from such a con-
tinuous season of similar weather
The same is true of the eastern and
northern winter. In such cases the
man who can afford it, whether he
live in Phoenix or Chicago or Boston,
takes a vacation. which is very prop
err But the Phoenix man who can't
take a vacation merely don't, while the
Chicago or Boston man often takes a
spell of sickness or dies of the heat,
which he never does in Phoenix. if he
treats himself half way decently.
The facts are, SAYS the doctor, that
the actual (sensible) temperature in
this valley is not usually as great by
10 to 90 degrees as it is in the east
during the warm season, the records
to the contrary Notwithstanding. In
truth, the word sensible" in paren-
theses above. ought not to be there,
but is placed there in the interest of
accuracy and that it may be explained.
perature of the human body under
given conditions. not the temperature
of the air, and is known in weather
bureau offices as the temperature OF
the wet bulb thermometer, while the
records published in comparing tenn
peratures everywhere, east and west.
are measured by the dry bulb Their
mometer The dry bulb thermometer
gives practically the sensible temper
allure IN the east, while in this region
the wet bulb thermometer should be
used to secure the proper data for an
honest comparison. The wet bulb
thermometer differs from the dry bulb
only in that it is wrapped with cotton
which is automatically moistened. The
evaporation of this moisture is as
nearly like the evaporation of the per-
spiration Of the human body as can
be arranged: and as everybody knows,
the evaporation in both instances has
a cooling effect. Therefore. when the
wet bulb thermometer is read in
Phoenix, one has practically the tenn
perature he would note on a dry bulb
thermometer IL it could be imbedded
in the human skin. or in other words,
the wet bulb reading is the actual tenn
perature a person in this climate would
be resisting. if he were standing naked
in the shade. For perfect fairness,
however, about ten degrees should be
added to this to allow for the clothes
ordinarily worn here on a hot day, and
the way some people dress, or undress,
it is liberal allowance.
1t might be contended that the same
practice should apply in the east, but
then comes the question of the humid
ity. The air being heavily saturated
with moisture, the eastern man does
not have the cooling effect of rapid
evaporation of perspiration, in fact,
there is very little and it is this differ
ence the wet bulb thermometer is>de-
signed TO indicate. Moreover, the
man in the east, all other things mem
toned above having been equalized,
has to breathe an atmosphere charged
with moisture and containing less
oxygen, hence he gets less relief from
a breath of fresh air than here where
the air is dry and every cubic inch of
l. gives as much inside satisfaction on
hot day, as a cubic foot of air would
in Philadelphia, New York or Bos-
ton.
Having given the reasons. said the