"However, if this local generation of a gravitic field can be used to nullify mass, we can make a space-ship that need not increase in mass as its velocity increases.
"Providing that my reasoning is any good. This is just conjecture and guess. I don't know yet how much this gravitic generator will cover."
"You've done a fair job so far," said Hedgerly, mixing another drink. "Of course, you'll let it drop there."
"Let it drop?" yelled Peter. "With a thing like this at my doorstep? With the twinkle of a slide rule I can become the Originator of Interstellar Travel, and you expect me to let it slip?"
Hedgerly smiled tolerantly. "The discoverer of the Hedgerly Effect does not become involved with space travel," he pointed out with a knowing air. "He does become the layer of the cornerstone for Time Travel, which we believe is as important."
Peter looked glumly at Joan. "Methinks of suicide," he groaned. "I invent Time Travel and for the next million years my invention becomes the curse of mankind. Pandora's Box never let out any trouble-scorpion as bad as people like my temporally-gadding grandson!"
"Now, grandpop, don't be bitter," laughed Hedgerly.
"Grandpop?" yelled Peter. "I'll—"
The doorbell rang, interrupting a string of threats. Hedgerly stepped springily to the door, opened it, and said: "Please come in, Miss Baker. We're expecting you."
Peter whistled.