I've locked the laboratory," Persikov went on, "so you need not clean it until I come back.
Understand?" "Yessir," Pankrat croaked.
That's fine then, go back to bed." Pankrat turned round, disappeared inside and collapsed onto the bed.
The Professor went into the vestibule.
Putting on his grey summer coat and soft hat, he remembered what he had observed in the microscope and stared at his galoshes for a few seconds, as if seeing them for the first time.
Then he put on the left galosh and tried to put the right one over it, but it wouldn't go on.
What an incredible coincidence that he called me away," said the scientist.
Otherwise I would never have noticed it.
But what does it mean? The devil only knows!.." The Professor smiled, squinted at his galoshes, took off the left one and put on the right.