invention of the steam-engine. To give you its nature briefly, it provides, putting it theoretically, for the complete utilization of atomic energy."
Bondy concealed a yawn. "But tell me, what have you been doing all these twenty years?"
Marek glanced at him with some surprise.
"Modern science teaches that all matter—that is to say, its atoms—is composed of a vast number of units of energy. An atom is in reality a collection of electrons, i.e. of the tiniest particles of electricity."
"That's tremendously interesting," Bondy broke in. "I was always weak in physics, you know. But you're not looking well, Marek. By the way, how did you happen to come by this playth . . . this, er . . . factory?"
"I? Oh, quite by accident. I invented a new kind of filament for electric bulbs. . . . But that's nothing; I only came upon it incidentally. You see, for twenty years I've been working on the combustion of matter. Tell me yourself, Bondy, what is the greatest problem of modern industry?"
"Doing business," said Bondy. "And are you married yet?"
"I'm a widower," answered Marek, leaping up excitedly. "No, business has nothing to do with it, I tell you. It's combustion. The complete utilization of the heat-energy contained in matter! Just
