"THAT is very interesting, Doctor, but I fail to see what bearing it has on the robbery."
"Mr. Rogers, how, on a dark day and in the absence of a timepiece, would you judge the passage of time?"
"Why, by my stomach, I guess."
"Exactly. By your metabolic rate. You eat a meal, it digests, you expend the energy which you have taken into your system, your stomach becomes empty and your system demands more energy. You are hungry and you judge that some five or six hours must have passed since you last ate. Do you follow?"
"Certainly."
"Let us suppose that by means of some tonic, some catalytic drug, your rate of metabolism and also your rate of expenditure of energy has been increased six fold. You would eat a meal and in one hour you would be hungry again. Having no timepiece, and assuming that you were in a light-proof room, you would judge that some five hours had passed, would you not?"
"I expect so."
"Very well. Now suppose that this accelerated rate of digestion and expenditure of energy continued. You would be sleepy in perhaps three hours, would sleep about an hour and a quarter, and would then wake, ready for your breakfast. In other words, you would have lived through a day in four hours."
"What advantage would there be in that?"
"None, from your standpoint. It would, however, increase the rate of reproduction of cattle greatly and might be a great boom to agriculture, but we will not discuss this phase now. Suppose it were possible to increase your rate of metabolism and expenditure of energy, in other words, your rate of living, not six times, but thirty thousand times. In such a case you would live five minutes in one one-hundredth of a second."
"Naturally, and you would live a year in about seventeen and one-half minutes, and a normal lifespan of seventy years in about twenty hours. You would be as badly off as any common may-fly."
"AGREED, but suppose that you could so regulate the dose of your catalyst that its effect would last for only one one-hundredth of a second. During that short period of time, you would be able to do the work that would ordinarily take you five minutes. In other words, you could enter a bank, pack a satchel with currency and walk out. You would be working in a leisurely manner, yet your actions would have been so quick that no human eye could have detected them. This is my theory of what actually took place. For verification, I will turn to Dr. Kirkwood, as he prefers to be known now."
"I don't know how you got that picture, but what you have said is about right," replied the prisoner.
"I got that picture by using a speed of thirty thousand times the normal sixteen exposures per second," replied Dr. Bird. "That figure I got from Dr. Knolles, the man who perfected the secret you stole when you left the Bureau three years ago. You secured only part of it and I suppose it took all your time since to perfect and complete it. You gave yourself away when you experimented on young Ladd. I was a track man myself in my college days and when I saw an account of his running, I smelt a rat, so I came back and watched him. As soon as I saw him crush and swallow a capsule just as the gun was fired, I was sure, and got hold of him. He was pretty stubborn, but he finally told me what name you were running under now, and the rest was easy. I would have got you in time anyway, but your bravado in telling us when you would next operate gave me the idea of letting you do it and photographing you at work. That is all I have to say. Captain Sturtevant, you can take your prisoner whenever you want him."
