New Britain herald., 1922-03-06
Continued From Our Last Issue.

Certainly. You know the bluish smoke and flame which IS sometimes observed escaping from the exhaust pipe beneath the rear of the car?" the professor asked. That is carbon monoxide."
 Would it be possible to convey this carbon monoyide In some way from the exhaust pipe of an auto mobile to closed room ?" Barry's voice trembled with excitement.
 Certainly" the professor ex- claimed. and the sheriff took step forward. "A rubber tubing would convey it directly from the exhaust pipe into any sort of container, metal or otherwise, I understand what you mean Sergeant Barry, and 1t is a most ingenious and practical theory! The container could be opened in a closed room and the carbon monoxide allowed to escape, or it could be di- rectly forced into the lungs by means of the rubber tubing by which 1t had been introduced 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 the fumes and died before help could reach them. The theory of the use of the gas by burglars in the effort to rem der their victims insensible, has often occurred to me. In fact"
 He broke off, and both hands clutched at his bushy white hair in sudden consternation.
 My God. And l unwittingly de- scribed the very means by which the murder was committed here in the house, in the possible hearing of any of score of people who might have utilized it for their purpose"
 Your" The cry came simultane- ously from the coroner and the sher- If, while Lieutenant Cadmus started forward.
 Yes I mentioned this matter at the dance-!"
 Where did you hold this conver- sation?" the sheriff demanded. '1n what part of the house or grounds?''
 Tn a corner of the library and to my hostess. We were closely screened by tall. Towering shrubs that we could not see who else might enter but people were constantly passing This is horrible!" the professor ex- claimed.
 Did you mention also the way in which the carbon monoxide might be transferred from the exhaust pipe of a'car to container, and how it might be used to asphyxiate people?" asked hot of the most important part to us."
 "Yes, I did!" Professor Semyonoy groaned. "I am an enthusiastic idiot.
 Barry strolled around the house tc the garage.
 Barry found Frank, the chauffeur busily engaged in cleaning the large touring car which. together with Mrs Tudor's own fast little racer and the station bus, occupied the space with. in the garage.
 Are these all the cars owned by the family, Frank?" Barry begar without preamble.
 The chauffeur looked up in surprise at the sudden query
 ''Yes, sir, except for the limousine which is being overhauled in town
 Would you hear if any one start ed one of the cars running down here during the night?"
 T should say I would!" he re. sponded. Did somebody take one o1 these machines out last night for g joy ride during the dancer"
 Wouldn't you have known it ii they had?" Barry retorted.
 The chauffeur shook his head.
 Not last night; wasn't here. Mrs of the dance, and I went to a movie in the village and stayed over witt Pete Whaley, who runs the public garage. I got home here about nine o'clock and went straight to the gar age, but 1t was all locked up tigh just the way had left it. There wa one queer thing, though"
 What was it?" the detective de manded as Frank hesitated.
 Well, it don't hardly seem wortl mentioning, but it struck me just nov as was cleaning the touring car tha there ought to be more gasoline in tht tank, according to my calculations than there is." He shook his head Il uSually ngure IL out pretty CloSe but I must have made mistake jus now"
 "Who has the keys to the garag, besides yourself?" Barry changed tn, subject abruptly.
 "Only Mrs. Tudor and poor Mis- Laurel. The locks ain't been changed in three years"
 "It rained hard last night" tht detective remarked. You didn't fino any muddy tracks in here this morn ing, Frank, did you?"
 "Only my own!" he said. Then { strange, rather confused look cam, over his face. Il usually keep m! floor like wax, sir, but was kind o hurried last night and didn't hose i down. I didn't find any muddy foot prints this morning, but I did se' some queer dried smears here ant there. as though someone might hay, washed up the marks of their tread Look here, sr-and here!"
 He pointed, and Barry looked There were clean places on the oil,