After that, nothing. The panel was empty.

CHAPTER III
AN EXECUTION

It must be understood that, notwithstanding the explanations which I must needs offer, the development of all these events took but very little time: exactly eighteen seconds, as I had the opportunity of calculating afterwards. But, during these eighteen seconds—and this again I observed on many an occasion—the spectator received the illusion of watching a complete drama, with its preliminary expositions, its plot and its culmination. And when this obscure, illogical drama was over, you questioned what you had seen, just as you question the nightmare which wakes you from your sleep.

Nevertheless it must be said that none of all this partook in any way of those absurd optical illusions which are so easily contrived or of those arbitrary ideas on which a whole pseudo-scientific novel is sometimes built up. There is no question of a novel, but of a physical phenomenon, an absolutely natural phenomenon, the explanation of which, when it comes to be known, is also absolutely natural.

And I beg those who are not acquainted with this explanation not to try to guess it. Let them not worry themselves with suppositions and interpretations. Let them forget, one by one, the theories over which I myself am lingering: all that has to do with B-rays, materializations, or the effect of solar heat. These are so many roads that lead nowhere. The best plan is to be guided by events, to have faith and to wait.

"It's finished, uncle, isn't it?" I asked.

"It's the beginning," he replied.

"How do you mean? The beginning of what? What's going to happen?"

"I don't know."