Astounding Stories of Super-Science April 1930 Part 48

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The Admiral nodded a.s.sent. Dr. Bird opened the bag which he had packed in his laboratory, took out a sheet of cardboard covered with a metallic looking substance, and placed it on the pillow. He stepped back and donned a pair of smoked gla.s.ses, watching it intently. Without a word he took off the gla.s.ses and handed them to the Admiral. The Admiral donned them and looked at the pillow. As he did so an exclamation broke from his lips.

"That plate seems to glow," he said in an astonished voice.

Dr. Bird stepped forward and laid his hand on the pillow. He was wearing a wrist watch with a radiolite dial. The substance suddenly increased its luminescence and began to glow fiercely, long luminous streamers seeming to come from the dial. The Doctor took away his hand and subst.i.tuted a bottle of liquid for the plate on the pillow. Immediately the bottle began to glow with a phosph.o.r.escent light.

"What on earth is it?" gasped Carnes.

"Excitation of a radioactive fluid," replied the Doctor. "The question is, what is exciting it. Somebody get a stepladder."

While Bolton was gone after the ladder, the Doctor took from his bag what looked like an ordinary pane of gla.s.s.

"Take this, Carnes," he directed, "and start holding it over each of those panes of quartz which you can reach. Stop when I tell you to."

The operative held the gla.s.s over each of the panes in succession, but the Doctor, who kept his eyes covered with the smoked gla.s.ses and fastened on the plate which he had replaced on the pillow, said nothing.

When Bolton arrived with the ladder, the process went on. One end and most of the front of the solarium had been covered before an exclamation from the Doctor halted the work.

"That's the one," he exclaimed. "Hold the gla.s.s there for a moment."

Hurriedly he removed the plate from the pillow and replaced the phial of liquid. There was only a very feeble glow.

"Good enough," he cried. "Take away the gla.s.s, but mark that pane, and be ready to replace it when I give the word."

From the instrument case he had brought he took out a spectroscope. He turned back the mattress and mounted it on the bedstead.

"Cover that pane," he directed.

Carnes did so, and the Doctor swung the receiving tube of the instrument until it pointed at the covered pane. He glanced into the eyepiece, and then held a tiny flashlight for an instant opposite the third tube.

"Uncover that pane," he said.

Carnes took down the gla.s.s plate and the Doctor gazed into the instrument. He made some adjustments.

"Are you familiar with spectroscopy, Admiral?" he asked.

"Somewhat."

"Take a squint in here and tell me what you see."

The Admiral applied his eye to the instrument and looked long and earnestly.

"There are some lines there, Doctor," he said, "but your instrument is badly out of adjustment. They are in what should be the ultra-violet sector, according to your scale."

"I forgot to tell you that this is a fluoroscopic spectroscope designed for the detection of ultra-violet lines," replied Dr. Bird. "Those lines you see are ultra-violet, made visible to the eye by activation of a radioactive compound whose rays in turn impinge on a zinc blende sheet.

Do you recognize the lines?"

"No, I don't."

"Small wonder; I doubt whether there are a dozen people who would. I have never seen them before, although I recognize them from descriptions I have read. Bolton, come here. Sight along this instrument and through that plate of gla.s.s which Carnes is holding and tell me what office that window belongs to."

Bolton sighted as directed up at the side of the State, War and Navy Building.

"I can't tell exactly at this time of night, Doctor," he said, "but I'll go into the building and find out."

"Do so. Have you a flashlight?"

"Yes."

"Flash it momentarily out of each of the suspected windows in turn until you get an answering flash from here. When you do, flash it out of each pane of gla.s.s in the window until you get another flash from here. Then come back and tell me what office it is. Mark the pane so that we can locate it again in the morning."

"It is the office of the a.s.sistant to the Adjutant General of the Army,"

reported Bolton ten minutes later.

"What is there in the room?"

"Nothing but the usual desks and chairs."

"I suspected as much. The window is merely a reflector. That is all that we can do for to-night, gentlemen. Admiral, keep your patient quiet and in a room with _gla.s.s_ windows, preferably with the shades drawn, until further notice. Bolton, meet me here with Carnes at sunrise. Have a picked detail of ten men standing by where we can get hold of them in a hurry. In the mean time, get the Chief of Air Service out of bed and have him order a plane at Langley Field to be ready to take off at 6 A. M. He is not to take off, however, until I give him orders to do so.

Do you understand?"

"Everything will be ready for you, Doctor, but I confess that I don't know what it is all about."

"It's the biggest case you ever tackled, old man, and I hope that we can pull it off successfully. I'd like to go over it with you now, but I'll be busy at the Bureau for the rest of the night. Drop me off there, will you?"

At sunrise the next morning, Bolton met Dr. Bird at the entrance to the White House grounds.

"Where is your detail?" he asked.

"In the State, War and Navy Building."

"Good. I want to go to the solarium, put a light on the place where the President's pillow was last night, and mark that pane of quartz we were looking through. Then we'll join the detail."

Dr. Bird placed the light and walked with Carnes across the White House grounds. Bolton's badge secured admission to the State, War and Navy Building for the party and they made their way to the office of the a.s.sistant to the Adjutant General.

"Did you mark the pane of gla.s.s through which you flashed your light last night, Bolton?" asked the Doctor.

The detective touched one of the panes.

"Good," exclaimed the Doctor. "I notice that this window has hooks for a window washer's belt. Get a life belt, will you?"

Astounding Stories of Super-Science April 1930 Part 48

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Astounding Stories of Super-Science April 1930 Part 48 summary

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