Pueblo chieftain., 1921-11-13
STUDIES DANGER
IN AUTO EXHAUST
Motorist Should Not Warm
Motor in Closed
Garage

New Haven, Conn.,. Nov. l.-Run-
ming the engine of q car 20 warm 1t up,
in a small closed garage, is one Of
the most dangerous things that a man
can do. according to Prof. Yandeu
Henderson, of Yale University. 1t Is
almost as dangerous as blowing out
the gas before going to bed, Professor
Henderson says.
"rhe exhaust gas from IN engine,
and city illuminating gas both contain
large proportion of carbon monoxide."
says Prof Henderson. "A small car
produces as much carbon monoxids in
minute as q. gas burner will flow
in three or four hours, and a large
car produces even more Of this gas.
These facts have been shown re-
Gently by Mr.. A. C. Fieldner and his
associates of the U. S. Bureau of Mines.
Professor Henderson consulting ply
siologist of the Bureau OF Mines, has
shown that IL the exhaust gas Is di-
luted with enough fresh air it is prac-
ttcally harmless. Three or four Vol
umes of carbon monoxide in 10000
times as much fresh air can be breath
ed for an hour or more without any
ill effect, he says.
But volumes OF the gas may cause
a slight headache, Q -olumes severe
headache and nausea, and Is or 20
volumes in 10000 of air will produce
Inconsistencies and even DEATH" he
states.
a car produces one cubic foot or
more of carbon monoxide per minute.
and Professor HENDERSON calculates
that in a small closed garage 90 by
10 by 20 feeD the car, when warming
up, contaminates the air to a deadly
concentration within three or four min
utes.
MANY people lose their lives every
winter by running their engine with
the garage doors and windows closed"
he points out. THE only safe way
is to open the garage doors before
starting the engine, or to slip piece
of hose over the exhaust and SO de-
liver the gas out of doors.
"Thesc Investigations Were carried
| out for the New York and New Jersey
Tunnel Commission which are con-
structing u yehicu,ar tunnel under the
large enough for two lines of passen-
ger cars or trucks each way, and Will
relieve automobilists OF the delay in
volved in crossing the river ON the
ferries. Elaborate plai.s are being made
| by the engineers for properly Nentilat-
| ing the tubes to keep them clear Of
smoke and gas
| The standard for maximum concen-
| tration of carbon monoxide In air for
safety recommended by Professor
Henderson has been adopted for the
tunnel. and driving through the tun-
mel will not involve appreciably more
risk due to bad air than driving along
Fifth Avenue in New York City ON
crowded afternoon.
"Many people believe that gasoline
vapor Is the cause of the unpleasant
feelings that they sometimes expcr-
icncc in "a large badly ventilated public
garage" says Dr. Henderson. DIR. II.
| w. Baggard. working with rue, has
shown that these symptoms arc not
due to tho gasoline vapor but to the
| carbon monoNide gas which results
when the gasoline vapor is exploded
in the cylinders of an engine.
Carbon monoaide combines with the
red coloring matter OF the blood, and
this prevents the blood from carrying
IAN. adeguace~ amount oNsgen-from
tho lungs to the brain and other parts
OF the body. But we find that soon
after the affected person comes into
fresh air again. tho carbon monoxidc
be gins to leave the blood. The re-
storation OF tho blood to its normal
coudition can also be assisted by in
halinS oxygen.
These Investigations are OF impor-
tanco not only to automobilists but also
to everyone who takes care OF his own
furnace. II enough air is not sup
Piled to a coal fire, large amounts of
(Continued on Next PpEe)