Evening capital news. (Boise, Idaho) 1901-1927, 1912-09-20

are releasing these immense quaint
ties of gas the vegetable world is
drinking II up. An acre of woodland
it is estimated, breathes four and a
half tons of air in a season, extract
ing from it one and a fifth tons OF
carbonic acid gas, and giving off three
and a quarter tons Of oxygen in re-
turn.
The normal amount OF carbonic acid
gas that may be breathed constantly
without Objectionable results is be-
lieved to be around seven parts In
10000 of air. The hyeienist, however,
declares that the more carbonic acid
gas there is in room the more or
ganic matter there is likely to be
found, and therefore the more danger
there Is of contagion being gathered
from the air. Dust is another evil
that usually accompanies bad ventil-
alton. and enough Of that has to be in =
hailed at best. 1t has been estimated
that during an hour in New York and
London the average person inhales
some four million germs and spores
That is, out of doors. What must it
be indoors in some OF the tenements
Most Deadly Of Gases
One frequently hears of fatal acct
dents through the inhalation Of carbon
monoXde produced by defective gas
stove This is one of the most deadly
OF all the gases, and yet every man
who smokes tobacco generates 1t in
no insignificant quantities. 1t has
been demonstrated in the laboratory
that man smoking a perfecto cigar
releases many cubic inches Of this
deadly gas. This was illustrated once
by a scientist exposing a small amount
of blood solution to two puffs OF to-
bacCo smoke and demonstrating its
absorption by means of a spectroscope.
The hygienic value of wholesome
exercise has been overlooked by most
urban dwelling people. Of course
those who do manual labor and those
who play tennis, golf and the like, get
their proper share, but very few peo-
pie in sedentary occupations do so.
The heart never does it's full work
without the stimulation of exercise.
The super abundant grth of many a
sedentary man represents the efforts
of nature to store up the unused fuel
Of his body in the form OF fat. 1t very
often happens that man with a large
waist measure begins to take exercise
and finds that he is reducing his glrth
without reducing his weight. This
simply means that the system has
drawn away some of the surplus mate
rial and carried il elsewhere to feed
the muscles that are having new de-
mands put upon them.
II has been calculated that a man
does 400 foot tons of work in a day II
his task is n hard one. In other
words, very hard days work repre-
sents the job OF lifting ton up 400
feet. Suppose. for instance, that he
We're able to lift ton with set Of
pulleys he could pull 1t to the top OF
Liberty's bonnet on the United States
capitol. A fair days work represents
300 foot-tons. Climbing six flights OF
steps in an ordinary office building,
man weighing 115 pounds would do
about eight foot tons Of work. The
hygienists say that man ought to
do from 100 to $50 foot-tons of work
a day for the sake Of exercise. This
would be represented by climbing the
StCpS VI AAcui " ~ 6cNcHsblOTy VI.
flee buildings a day. The man who
walks five miles a day at the rate OF
four miles an hour gets about the ap-
proximately right amount Of exercise.
The laboratories Of the medical world
are engaged in deep study Of the
problems OF diet and exercise. The
most ingenious kinds of Instruments
have been devised for the purpose pf
measuring the wear and tear on the
human system of various forms of la
Dor and exercise When considered
in connection with the problems Of
diet many other remarkable instru-
ments are used. The navies OF the
world have made perhaps the most
systematic studies into the problems OF
physical exercise. since the matter of
keeping men on shipboard In fine
trim is large problem The
United States navy sees to II that
every sailor gets his proper exercise