"Ah," said Bronson aloud.

What came next? How the two worlds had become so socially and technically different was something to be studied at a later date. For the present Bronson felt that it was the time to start thinking about action.

He left the library and walked down the street thoughtfully. Here the bomb had failed, here—and automatically Ed Bronson cataloged the place as Earth Three—science was unfettered.

So, he reasoned along two lines simultaneously, the transmission of things from one plane to the other required the use of the radioisotopic phosphor—Bronson did not know the conglomeration of transuranic elements comprised an entire rare element group known as the space-resonant series and so called them by the name he had known them—and since this was so, he would be forced to investigate.

Also, since Earth Three had no apparent regulation on scientific research, it would probably be easy to obtain enough to go to work. The unfortunate part of it was that his rather extensive bank account was deposited in the First National Bank. Though it was situated within three blocks of this very spot, its officers would view his very solid checks as so much illegal paper.

He smiled wryly.

So here he was, isolated on an obviously alien world, with the weight of his own earth on his shoulders, quite incapable of more than scratching the surface.

Lost—completely lost—in the troubled thought, Ed Bronson's trained hands, by sheer reflex, dipped into his pocket for a cigarette. The hands, finding none, notified the locomotor areas of his brain, which, operating on sheer habit and reflex, sent a message to the eyes.

The eyes looked around, though what they scanned made no impression on the more conscious sections of Bronson's mind. They caught what was wanted and the automatic process went on—the information went back to the habit-section, directions went to the muscles and Bronson walked towards the drug-store in absolutely the same state of coma as the proverbial absent-minded professor.

Too deeply engrossed in his thoughts to pay attention to the automatic items, Ed Bronson's brain caused his voice to murmur a cigarette-brand name. The cigarette came, and Bronson's right hand dipped into his pocket and dropped a twenty-dollar bill on the counter.