For some moments the Demon sat quietly thinking. Finally the frown left his face and he said, with animation:
"I have other inventions, which you may use without any such qualms of conscience. The Electro-Magnetic Restorer I offered you would be a great boon to your race, and could not possibly do harm. And, besides this, I have brought you what I call the Illimitable Communicator. It is a simple electric device which will enable you, wherever you may be, to converse with people in any part of the world, without the use of such crude connections as wires. In fact, you may"——
"Stop!" cried Rob. "It is useless for you to describe it, because I'll have nothing more to do with you or your inventions. I have given them a fair trial, and they've got me into all sorts of trouble and made all my friends miserable. If I was some high-up scientist it would be different; but I'm just a common boy, and I don't want to be anything else."
"But, your duty—" began the Demon.
"My duty I owe to myself and to my family," interrupted Rob. "I have never cultivated science, more than to fool with some simple electrical experiments, so I owe nothing to either science or the Demon of Electricity, so far as I can see."
"But consider," remonstrated the Demon, rising to his feet and speaking in a pleading voice, "consider the years that must elapse before any one else is likely to strike the Master Key! And, in the meanwhile, consider my helpless position, cut off from all interest in the world while I have such wonderful inventions on my hands for the benefit of mankind. If you have no love for science or for the advancement of civilization, do have some consideration for your fellow-creatures, and for me!"
"If my fellow-creatures would have as much trouble with your electrical inventions as I had, I am doing them a service by depriving them of your devices," said the boy. "As for yourself, I've no fault to find with you, personally. You're a very decent sort of Demon, and I've no doubt you mean well; but there's something wrong about our present combination, I'm sure. It isn't natural."
The Demon made a gesture of despair.