"Ah, yess, Minnie, little Minnie. I know, I know. Ve shall neffer see our Mitkey again, und I almost vish our eggsperiment hadt vailed. Budt there are gompensations, Minnie. He shall be der most vamous of all mices. Der Star-Mouse! Virst liffing greature effer to go beyond der gravitational bull of earth!"
The night was long. Occasionally high clouds obscured vision.
"Minnie, I shall make you more gomfortable than in that so-small vire cage. You vould like to seem to be vree, vould you not, vithout bars, like der animals at modern zoos, vith moats insteadt?"
And so, to fill in an hour when a cloud obscured the sky, the Herr Professor made Minnie her new home. It was the end of a wooden crate, about half an inch thick and a foot square, laid flat on the table, and with no visible barrier around it.
But he covered the top with metal foil at the edges, and he placed the board on another larger board which also had a strip of metal foil surrounding the island of Minnie's home. And wires from the two areas of metal foil to opposite terminals of a small transformer which he placed near by.
"Und now, Minnie, I shall blace you on your island, vhich shall be liberally supplied mitt cheese und vater, und you shall vind it iss an eggcelent blace to liff. But you vill get a mild shock or two vhen you try to step off der edge of der island. It vill not hurt much, but you vill not like it, und after a few tries you vill learn not to try again, no? Und—"
And night again.
Minnie happy on her island, her lesson well learned. She would no longer so much as step on the inner strip of metal foil. It was a mouse-paradise of an island, though. There was a cliff of cheese bigger than Minnie herself. It kept her busy. Mouse and cheese; soon one would be a transmutation of the other.
But Professor Oberburger wasn't thinking about that. The Professor was worried. When he had calculated and re-calculated and aimed his eight-inch reflector through the hole in the roof and turned out the lights—