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"Yes. The detectascope enables you to see what is going on in another room. The focus may be altered in range so that the faces of those in the room may be recognized and the act of passing money or signing cheques, for instance, may be detected. The instrument is fashioned somewhat after the cytoscope of the doctors, with which the human interior may be seen." "Very remarkable," exclaimed Clare.
"It's all right," she said. "Now, I'll take this to that tong leader he's in a room only just across the hall." She went out. Kennedy at the detectascope was very excited as this went on. He now jumped off the chair on which he had been standing and rushed to the door to head her off. To our surprise, in spite of the fact that we could turn the key in the lock, it was impossible to open it!
Hence the lens gets its name 'the fish-eye lens. A globe refracts the light that reaches it from all directions, and if it is placed as the lens is in the detectascope so that one half of it catches the light, all this light will be refracted through it.
"But suppose the door has no transom?" he asked, pointing to our own door. I scratched my head, thoughtfully. I had assumed that the door would have a transom. A moment later, Craig went to the cabinet and drew out a tube about as big around as a putty blower and as long. "Now, here's what I call my detectascope," he remarked. "None of your mirrors for me."
"Then Ike the Dropper is the collector for the police or the politicians higher up," she exclaimed under her breath. "If we learned nothing more, that would be enough. It would tell us whom to watch." Hastily we took turns at getting a good look at Ike through the wonderful little detectascope. Then Kennedy resumed his watch, whispering now and then what he saw.
Kennedy resumed his position for looking through the detectascope, occasionally glancing down at the notes he had made the day before and now and then making a slight alteration. "There. She is going away now. Well, I guess the collection is all over. He has his hat on and a third cigar, ready to go as soon as somebody signals that the coast is clear.
His subtle glance detected our presence without our knowing it. Hastily picking up the brace and bit and the rest of the debris, and with a last look at the detectascope, which was hardly noticeable, even if one already knew it was there, we hurried into 511 and shut the door. Kennedy mounted a chair and applied his eye to the detectascope.
Only two hundred this time." Another wait followed, during which Ike smoked down his cigar and lighted another from the stub. Then the door opened again. Kennedy motioned quickly to Clare to look through the detectascope. Meanwhile he pulled from his pocket the piece of paper he had written on and torn from the back of the menu at the Futurist. "Marie!" exclaimed Clare under her breath.
I did so and was amazed to find that through a hole less than a quarter of an inch in diameter the brass tube enabled me to see the entire room next to us. I looked up at Kennedy in surprise. "What do you think of this, Miss Kendall?" I asked, moving the settee out of her way. "What do you call it?" "That is a detectascope," he replied, "a little contrivance which makes use of the fish-eye lens.
"Look through it," he replied simply, still at work on some other apparatus he had brought. I looked. In spite of the smallness of the opening at the other end, I was amazed to find that I could see nearly the whole room on the other side of the wall. "It's a detectascope," he explained, "a tube with a fish-eye lens which I had an expert optician make for me." "A fish-eye lens?" I repeated. "Yes.
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