The Master Key 
An Electrical Fairy Tale 
Founded Upon The Mysteries Of Electricity And The Optimism Of Its 
Devotees. It Was Written For Boys, But Others May Read It 
by L. Frank Baum 
 
Contents 
--Who Knows?-- 
1. Rob's Workshop 
2. The Demon of Electricity 
3. The Three Gifts 
4. Testing the Instruments 
5. The Cannibal Island 
6. The Buccaneers 
7. The Demon Becomes Angry 
8. Rob Acquires New Powers 
9. The Second Journey 
10. How Rob Served a Mighty King 
11. The Man of Science
12. How Rob Saved a Republic 
13. Rob Loses His Treasures 
14. Turk and Tatar 
15. A Battle With Monsters 
16. Shipwrecked Mariners 
17. The Coast of Oregon 
18. A Narrow Escape 
19. Rob Makes a Resolution 
20. The Unhappy Fate of the Demon 
 
Who Knows? 
These things are quite improbable, to be sure; but are they impossible? 
Our big world rolls over as smoothly as it did centuries ago, without a 
squeak to show it needs oiling after all these years of revolution. But 
times change because men change, and because civilization, like John 
Brown's soul, goes ever marching on. 
The impossibilities of yesterday become the accepted facts of to-day. 
Here is a fairy tale founded upon the wonders of electricity and written 
for children of this generation. Yet when my readers shall have become 
men and women my story may not seem to their children like a fairy 
tale at all. 
Perhaps one, perhaps two--perhaps several of the Demon's devices will 
be, by that time, in popular use. 
Who knows?
1. Rob's Workshop 
When Rob became interested in electricity his clear-headed father 
considered the boy's fancy to be instructive as well as amusing; so he 
heartily encouraged his son, and Rob never lacked batteries, motors or 
supplies of any sort that his experiments might require. 
He fitted up the little back room in the attic as his workshop, and from 
thence a net-work of wires soon ran throughout the house. Not only had 
every outside door its electric bell, but every window was fitted with a 
burglar alarm; moreover no one could cross the threshold of any 
interior room without registering the fact in Rob's workshop. The gas 
was lighted by an electric fob; a chime, connected with an erratic clock 
in the boy's room, woke the servants at all hours of the night and 
caused the cook to give warning; a bell rang whenever the postman 
dropped a letter into the box; there were bells, bells, bells everywhere, 
ringing at the right time, the wrong time and all the time. And there 
were telephones in the different rooms, too, through which Rob could 
call up the different members of the family just when they did not wish 
to be disturbed. 
His mother and sisters soon came to vote the boy's scientific craze a 
nuisance; but his father was delighted with these evidences of Rob's 
skill as an electrician, and insisted that he be allowed perfect freedom 
in carrying out his ideas. 
"Electricity," said the old gentleman, sagely, "is destined to become the 
motive power of the world. The future advance of civilization will be 
along electrical lines. Our boy may become a great inventor and 
astonish the world with his wonderful creations." 
"And in the meantime," said the mother, despairingly, "we shall all be 
electrocuted, or the house burned down by crossed wires, or we shall be 
blown into eternity by an explosion of chemicals!" 
"Nonsense!" ejaculated the proud father. "Rob's storage batteries are
not powerful enough to electrocute one or set the house on fire. Do give 
the boy a chance, Belinda." 
"And the pranks are so humiliating," continued the lady. "When the 
minister called yesterday and rang the bell a big card appeared on the 
front door on which was printed the words: 'Busy; Call Again.' 
Fortunately Helen saw him and let him in, but when I reproved Robert 
for the act he said he was just trying the sign to see if it would work." 
"Exactly! The boy is an inventor already. I shall have one of those 
cards attached to the door of my private office at once. I tell you, 
Belinda, our son will be a great man one of these days," said Mr. Joslyn, 
walking up and down with pompous strides and almost bursting with 
the pride he took in his young hopeful. 
Mrs. Joslyn sighed. She knew remonstrance was useless so long as her 
husband encouraged the boy, and that she would be wise to bear her 
cross with fortitude. 
Rob also knew his mother's protests would be of no avail; so he 
continued to revel in electrical processes of all sorts, using the house as 
an experimental station to test the powers of his productions. 
It was in his own room, however,--his "workshop"--that he especially    
    
		
	
	
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