"I never saw him. I presume in daytime, eh Bill?" and he turned to the day engineer.
"Always in daytime--usually about noon," said Bill from his corner.
"Any other entrance to the basement except this way--and you could see anyone coming here this way I suppose?"
"Sure I could see 'em. There's no other entrance to the cellar except the coal hole in the sidewalk in front."
"Two big electric lights in front of the building, aren't there?"
"Yes. They go all night."
A slightly puzzled expression crept into the eyes of The Thinking Machine. Hatch knew from the persistency of the questions that he was not satisfied; yet he was not able to fathom or to understand all the queries. In some way they had to do with the possibility of some one having access to the meter.
"Where do you usually sit at night here?" was the next question.
"Over there where Bill's sitting. I always sit there."
The Thinking Machine crossed the room to Bill, a typical, grimy-handed man of his class.