"It seems to me that you could analyze the flesh—"
He smiled. "We have. The state of analytical chemistry is well advanced. We could, I think, take a dry scraping out of the cauldron used by MacBeth's witches, and determine whether Shakespeare had reported the formula correctly. Now, young man, if you think that something is added to the human flesh to make it Mekstrom's Flesh, you are wrong. Standard analysis shows that the flesh is composed of exactly the same chemicals that normal flesh contains, in the same proportion. Nothing is added, as, for instance, in the case of calcification."
"Then what is the difference?"
"The difference lies in the structure. By X-ray crystallographic method, we have determined that Mekstrom's Flesh is a micro-crystalline formation, interlocked tightly." Scholar Phelps looked at me thoughtfully. "Do you know much about crystallography?"
As a mechanical engineer I did, but as a writer of magazine articles I felt I should profess some ignorance, so I merely said that I knew a little about the subject.
"Well, Mr. Cornell, you may know that in the field of solid geometry there are only five possible regular polyhedrons. Like the laws of topology that state that no more than four colors need be used to print a map on a flat surface, or that no more than seven colors are required to print separate patches on a toroid, the laws of solid geometry prove that no more than five regular polyhedrons are possible. Now in crystallography there are only thirty-two possible classes of crystal lattice construction. Of these only thirty have ever been discovered in nature. Yet we know how the other two would appear if they did emerge in natural formation."
I knew it all right but I made scribblings in my notebooks as if the idea were of interest. Scholar Phelps waited patiently until I'd made the notation.
"Now, Mr. Cornell, here comes the shock. Mekstrom's Flesh is one of the other two classes."
This was news to me and I blinked.
Then his face faded into a solemn expression. "Unfortunately," he said in a low voice, "knowing how a crystal should form does not help us much in forming one to that class. We have no real control over the arrangement of atoms in a crystal lattice. We can prevent the crystal formation, we can control the size of the crystal as it forms. But we cannot change the crystal into some other class."