Hammer laughed again, and went towards the door.
"Then the idea must be black magic," he said.
I smiled painfully, for my head was throbbing. But I was happier then than I had ever been, for I had solved the problem that had haunted my brain for ten years.
"There's no such thing as black magic," I said.
Three weeks later I beheld the miracle. It was wrought on the last day of December, in the laboratory of the hospital, high above the gloom and squalor of the city. The miracle occurred within a brilliant little circle of light, and I saw it with my eye glued to a microscope. It passed off swiftly and quietly, and though I expected it, I was filled with a great wonder and amazement.
To a lay mind the amazement with which I beheld the miracle will require explanation. I had witnessed the transformation of one germ into another; a thing which is similar to a man seeing a flock of sheep on a hill-side change suddenly into a herd of cattle. For many minutes I continued to move the slide in an aimless way with trembling fingers. My temperament is earthy; it had once occurred to me quite seriously that if I saw a miracle I would probably go mad under the strain. Now that I had seen one, after the first flash of realization my mind was listless and dull, and all feeling of surprise had died away. The black rods floated with slow motion in the minute currents of fluid I had introduced. The faint roar of London came up from far below; the clock ticked steadily and the microscope lamp shone with silent radiance. And I, Richard Harden, sat dangling my short legs on the high stool, thinking and thinking....
That night I wrote to Professor Sarakoff. A month later I was on my way to Russia.