During the long night after the launching of the rocket, he had been very busy with his telescope, a sweet little eight-inch reflector, checking its course as it gathered momentum. The exhaust explosions made a tiny fluctuating point of light that was possible to follow, if one knew where to look.

But the following day there seemed to be nothing to do, and he was too excited to sleep, although he tried. So he compromised by doing a spot of housekeeping, cleaning the pots and pans. It was while he was so engaged that he heard a series of frantic little squeaks and discovered that another small gray mouse, with shorter whiskers and a shorter tail than Mitkey, had walked into the wire-cage mousetrap.

"Vell, vell," said the Professor, "vot haff ve here? Minnie? Iss it Minnie come to look for her Mitkey?"

The Professor was not a biologist, but he happened to be right. It was Minnie. Rather, it was Mitkey's mate, so the name was appropriate. What strange vagary of mind had induced her to walk into an unbaited trap, the Professor neither knew nor cared, but he was delighted. He promptly remedied the lack of bait by pushing a sizable piece of cheese through the bars.

Thus it was that Minnie came to fill the place of her far-traveling spouse as repository for the Professor's confidences. Whether she worried about her family or not there is no way of knowing, but she need not have done so. They were now large enough to fend for themselves, particularly in a house that offered abundant cover and easy access to the refrigerator.

"Ah, und now it iss dargk enough, Minnie, that ve can loogk for that husband of yours. His viery trail across the sky. True, Minnie, it iss a very small viery trail und der astronomers vill not notice it, because they do not know vhere to loogk. But ve do.

"He iss going to be a very vamous mouse, Minnie, this Mitkey of ours, vhen ve tell der vorld about him und about mein rocket. You see, Minnie ve haff not told them yet. Ve shall vait und giff der gomplete story all at vunce. By dawn of tomorrow ve'll—

"Ah, there he iss, Minnie! Vaint, but there. I'd hold you up to der scope und let you loogk, but it vould not be vocused right for your eyes, und I do not know how to—

"Almost vun hundred thousand miles, Minnie, und still agcelerating, but not for much longer. Our Mitkey iss on schedule; in fagt he iss going vaster than ve had vigured, no? It iss sure now that he vill eggscape the gravitation of der earth, und fall upon der moon!"

Of course, it was purely coincidental that Minnie squeaked.