"For ages the moon has been an object of worship by various religious sects, and some of the most obscene orgies of which we have record occurred in the moonlight. The full moon seems to affect dogs to a state of partial hypnosis with consequent howling and evident pain in the eyes. Certain feeble minded persons have been known to be adversely affected by moonlight as well as some cases of complete mental aberration. In other words, while moonlight has no practical effect on the normal human in its usual concentration, it does have an adverse effect on certain types of mentality and, despite the laughter of medical science, there seems to be something in the theory of 'moon madness.' This effect Von Beyer attributed to the emanations of lunium, which element he detected in the spectra of the moon, in the form of a wide band in the ultra-violet region.
"I obtained from Carnes a history of your case, and when I found that your attacks grew violent with the full moon and subsided with the new moon, I was sure that I was on the right track, although I had at that time no way of knowing whether it was from natural or artificial causes that the effect was being produced. I interviewed Admiral Clay and found that you were suffering from a form of dermititis resembling sunburn, and that convinced me that an attack was being made on your sanity, for an excess of ultra-violet light will always tend to produce sunburn. I inquired about the windows of your solarium, for ultra-violet light will not pass through a lead glass. When the Admiral told me that the glass had been replaced with fused quartz, which is quite permeable to ultra-violet and that the change had been almost coincident with the start of your malady, I asked him to get you out of the solarium and let me examine it.
"By means of certain fluorescent substances which I used, I found that your pillow was being bathed in a flood of ultra-violet light, and the fluoro-spectroscope soon told me that lunium emanations were present in large quantities. These rays were not coming to you directly from their source, but one of the windows of the State, War and Navy Building was being used as a reflector. I located the approximate source of the ray by means of an improvised apparatus, and we surrounded the place. Stokowsky was killed while attempting to escape. I guess that is about all there is to it."
"Thank you, Doctor," said the President. "I would be interested in a description of the apparatus which he used to produce this effect."
"The apparatus was quite simple, Sir. It was merely a large collector of moonlight, which was thrown after collection onto a lunium plate. The resultant emanations were turned into a parallel beam by a parabolic reflector and focused, through a rock crystal lens with an extremely long focal length, onto your pillow."
"Then Stokowsky had isolated Von Beyer's new element?" asked the President.
"I am still in doubt whether it is a new element or merely an allotropic modification of the common element, cadmium. The plate which he used has a very peculiar property. When moonlight, or any other reflected light of the same composition falls on it, it acts on the ray much as the button of a Roentgen tube acts on a cathode ray. As the cathode ray is absorbed and an entirely new ray, the X-ray, is given off by the button, just so is the reflected moonlight absorbed and a new ray of ultra-violet given off. This is the ray which Von Beyer detected. I thought that I could catch traces of Von Beyer's lines in my spectroscope, and I think now that it is due to a trace of lunium in the cadmium plating of the barrels. Von Beyer could have easily made the same mistake. Von Beyer's work, together with Stokowsky's opens up an entirely new field of spectroscopic research. I would give a good deal to go over to Baden and go into the matter with Von Beyer and make some plans for the exploitation of the new field, but I'm afraid that my pocketbook wouldn't stand the trip."
"I think that the United States owes you that trip, Dr. Bird," said the Chief Executive with a smile. "Make your plans to go as soon as you get your data together. I think that the Treasury will be able to take care of the expense without raising the income tax next year."