"Then you know--"
"I know all about your foolish experiences," interrupted the Demon, "for I have been with you constantly, although I remained invisible."
"Then you know what a jolly time I've had," returned the boy. "But why do you call them foolish experiences?"
"Because they were, abominably foolish!" retorted the Demon, bitterly. "I entrusted to you gifts of rare scientific interest--electrical devices of such utility that their general adoption by mankind would create a new era in earth life. I hoped your use of these devices would convey such hints to electrical engineers that they would quickly comprehend their mechanism and be able to reproduce them in sufficient quantities to supply the world. And how do you treat these marvelous gifts? Why, you carry them to a cannibal island, where even your crude civilization has not yet penetrated!"
"I wanted to astonish the natives," said Rob, grinning.
The Demon uttered an exclamation of anger, and stamped his foot so fiercely that thousands of electric sparks filled the air, to disappear quickly with a hissing, crinkling sound.
"You might have astonished those ignorant natives as easily by showing them an ordinary electric light," he cried, mockingly. "The power of your gifts would have startled the most advanced electricians of the world. Why did you waste them upon barbarians?"
"Really," faltered Rob, who was frightened and awed by the Demon's vehement anger, "I never intended to visit a cannibal island. I meant to go to Cuba."
"Cuba! Is that a center of advanced scientific thought? Why did you not take your marvels to New York or Chicago; or, if you wished to cross the ocean, to Paris or Vienna?"
"I never thought of those places," acknowledged Rob, meekly.
"Then you were foolish, as I said," declared the Demon, in a calmer tone. "Can you not realize that it is better to be considered great by the intelligent thinkers of the earth, than to be taken for a god by stupid cannibals?"
"Oh, yes, of course," said Rob. "I wish now that I had gone to Europe. But you're not the only one who has a kick coming," he continued. "Your flimsy traveling machine was nearly the death of me."
"Ah, it is true," acknowledged the Demon, frankly. "The case was made of too light material. When the rim was bent it pressed against the works and impeded the proper action of the currents. Had you gone to a civilized country such an accident could not have happened; but to avoid possible trouble in the future I have prepared a new instrument, having a stronger case, which I will exchange for the one you now have."
"That's very kind of you," said Rob, eagerly handing his battered machine to the Demon and receiving the new one in return. "Are you sure this will work?"
"It is impossible for you to injure it," answered the other.
"And how about the next three gifts?" inquired the boy, anxiously.
"Before I grant them," replied the Demon, "you must give me a promise to keep away from uncivilized places and to exhibit your acquirements only among people of intelligence."
"All right," agreed the boy; "I'm not anxious to visit that island again, or any other uncivilized country."
"Then I will add to your possessions three gifts, each more precious and important than the three you have already received."
At this announcement Rob began to quiver with excitement, and sat staring eagerly at the Demon, while the latter increased in stature and sparkled and glowed more brilliantly than ever.
8. Rob Acquires New Powers
"I have seen the folly of sending you into the world with an offensive instrument, yet with no method of defense," resumed the Demon, presently. "You have knocked over a good many people with that tube during the past week."
"I know," said Rob; "but I couldn't help it. It was the only way I had to protect myself."
"Therefore my next gift shall be this Garment of Protection. You must wear it underneath your clothing. It has power to accumulate and exercise electrical repellent force.