Aha, aha," he muttered.
It's gone.
I see.
I understand," he drawled, staring with crazed and inspired eyes at the extinguished light overhead.
It's simple." Again he let down the hissing shutters and put on the light.
Then looked into the microscope and grinned happily, almost greedily.
I'll catch it," he said solemnly and gravely, crooking his finger.
I'll catch it.
Perhaps the sun will do it too." The shutters shot up once more.
Now you could see the sun.
It was shining on the walls of the Institute and slanting down onto the pavements of Herzen Street.
The Professor looked through the window, working out where the sun would be in the afternoon.