"I have proved that they do have such an effect, and that that effect is what we call evolution! For it is the cosmic rays, beating upon every living organism on earth, that cause the profound changes in the structure of those organisms which we call mutations. Those changes are slow indeed, but it is due to them that through the ages life has been raised from the first protoplasm to man, and is still being raised higher."
"good loRd, you can't be serious on this. Pollard!" Dutton protested.
"I am so serious that I am going to stake my life on my discovery tonight," Pollard answered, quietly.
We were startled. "What do you mean?"
"I mean that I have found in the cosmic rays the cause of evolution, the answer to the first question, and that tonight by means of them I am going to answer the second question and find out what the future evolutionary development of man will bel"
"But how could you possibly—"
Pollard interrupted. "Easily enough. I have been able in the last months to do something no physicist has been able to do, to concentrate the cosmic rays and yet remove from them their harmful properties. You saw the cylinder over the metal cube in my laboratory? That cylinder literally gathers in from an immense distance the cosmic rays that strike this part of earth, and reflects them down inside the cube.
"Now suppose those concentrated cosmic rays, millions of times stronger than the ordinary cosmic rays that strike one spot on earth, fall upon a man standing inside the cube. What will be the result? It is the cosmic rays that cause evolutionary change, and you heard me say that they are still changing all life on earth, still changing man, but so slowly as to be unnoticeable. But what about the man under those terrifically intensified rays? He will be changed millions of times faster than ordinarily, will go forward in hours or minutes through the evolutionary mutations that all mankind will go forward through in eons to come!"
"And you propose to try that experiment?" I cried.
"I propose to try it on myself," said Pollard gravely, "and to find out for myself the evolutionary changes that await humankind."