Evening journal., 1922-03-06

certainly. You know the blush
smoke and flame which is some
times observed escaping from the
exhaust pipe beneath the rear OF
the carr" the professor asked.
That is carbon monoxide."
Would it be possible to convey
this carbon monoxide in some way
from the exhaust pipe OF an auto
mobile TO a closed room?" Barry's
voice trembled with excitement.
Certainly" the professor ex-
claimed and the sheriff took a sten
forward. "A rubber tubing would
convey it directly from the exhaust
pipe into any sort Of container
metal or otherwise. 1 understand
what you mean. Sergeant Barry, and
it is most ingenious and practical
theory The container could be
opened I'm a closed room and the
carbon monoxide allowed to es-
cape. or IL could be directly forced
into the lungs by means of tie rub
Der tubing by which 10 had been in
troduced from the exhaust pipe.
There have been more than one
case Of accidental death reported In
the medical journals IN which
chauffeurs, working In closed
garages. have been overcome by tho
fumes and died before help could
reach them. The theory OF the use
of the gas by burglars In the effort
to render their victims insensible
has often occurred TO me In fact"
He broke OF. and both hands
clutched at his bushy white hair In
sudden CONSERVATION.
MY Cod And I unwittingly de-
scribed the very means by which
the murder was committed here in
the house. IN the possible hearing
OF any Of a score OF people who
might have utilized It for their pur-
pose."
"You?" The cry came simultane-
ously from the coroner and the
sheriff. while Lieutenant Cadmus
started forward
yes. mentioned this matter
at the dance"
Where did you hold this CONVEX
sation?" the sheriff demanded. "In
what part OF tie house or grounds"
I'm corner OF the library, and
to my hostess. We were closely
screened by tall lowering shrubs
that we could not see who else
might enter. but people were con-
stantly passing This is horribie."
tho professor exclaimed.
"Did you mention also the way
in which the carbon monoXide might
be transferred from the exhaust
pipe OF car TO n container. and
how it might be used 10 asphyx
people?" asked Barry. "That would.
OF course. be the most important
part TO u.s."
cYcs. I did," Professor semyonov
sroancd Il ann an enthusiastic
IDIOT"
Barry strolled around the house
90 the garage.
Barry found Frank the chauffeur.
busily engaged In cleaning tho large
touring car. which. together with
Mrs. Tudor's own fast little racer
and the station bus, occupied the
space within the garage.
Are these all tho cars owned by
the family. Frank?" Barry began
without preamble.
The chauffeur looked up in sur
prise at the sudden query.
yes. sir. except for the Limousine
which is being overhauled in town.
Would you hear II any one start
ed one Of the cars running down
here during the night7"
Il should say ] would" he re-
60
Of these machines out last night for
Joy ride during the dance?"
Wouldn't YOU have known 10 they
had?" Barry retorted.
The chauffeur shook his head
"Not last night: 1 wasn't here
Mrs. Tudor gave me night of on
account OF the dance. and I went IA
a movie In the village and stayed
over with Pete Whaley. who runs
the public garage. I got home here
about nine o'clock and went straight
TO the garage. but it was all locked
up tight just the way 1 had left f.
There was one queer thing, though
What was it?" the detective de-
manded as Frank hesitated.
We'll. it don't hardly seem wortf
mentioning. but il struck me JUS
now as I was cleaning the tourini
car. that there ought TO be more
gasoline in the tank. according @
my calculations. than there is." IL
shook his head II usually figure &
out pretty close. but 1 must have
made a mistake just now"
Who has the keys to the garage
besides yourself2"' Barry change
the subject abruptly.
"Only Mrs. Tudor and poor Mis-
Laurel. The locks amt been change'
i'm three years"
1t rained hard last night" IN
detective remarked. you didn'
find any muddy tracks in here tin
morning. Frank. did you?"
only my own" he said. Then
strange. rather confused look cam
over his face. 4 usually keep m.
noor like wax. sir. but 1 was kind o
hurried last night and didn't hose
down. l didn't find any muddy foot
prints this morning but ! did Sc
some queer dried smears here an
there as though someone Nigh
have washed up the marks Of thei
tread Look here. sir-and here!'
He pointed. and Barry looked
There were clean places on the oil
floor, as though indeed someone ha
tried TO obliterate their footprint
Barry went carefully over every var
OF space. Then he straightened an
inquired casually:
How did you first learn OF tn
trouble up at the house2 Did Marth