Produced by David Edwards, Chris Whitehead and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)

[Illustration: Rob was surrounded by a group of natives]

The Master Key

FOUNDED UPON THE MYSTERIES OF ELECTRICITY AND THE OPTIMISM OF ITS DEVOTEES. IT WAS WRITTEN FOR BOYS, BUT OTHERS MAY READ IT

The Master Key

_The_ BOWEN-MERRILL COMPANY PUBLISHERS · INDIANAPOLIS

The Master Key

PRESS OF BRAUNWORTH & CO. BOOKBINDERS AND PRINTERS BROOKLYN, N. Y.

Rob was surrounded by a group of natives of hideous appearance--_Frontispiece_

From his workshop ran a network of wires throughout the house--_Headpiece_ 1

A quick flash of light almost blinded Rob 6

A curious being looked upon him from a magnificent radiance--_Tailpiece_ 8

Scientific men think the people of Mars have been trying to signal us--_Headpiece_ 9

I am here to do your bidding, said the Demon--_Tailpiece_ 17

Men have not yet discovered what the birds know--_Headpiece_ 18

These three gifts may amuse you for the next week--_Tailpiece_ 28

Rob's action surprised them all--_Headpiece_ 29

"He'll break his neck!" cried the astounded father 36

The red-whiskered policeman keeled over--_Tailpiece_ 42

Rob's captors caught up the end of the rope and led him away--_Headpiece_ 43

"If it's just the same to you, old chap, I won't be eaten to-day"--_Tailpiece_ 59

Rob soared through the air with five Buccaneers dangling from his leg--_Headpiece_ 60

It was a strange sight to see the pirates drop to the deck and lie motionless 66

When night fell his slumber was broken and uneasy--_Tailpiece_ 77

When Rob had been kissed by his mother, he gave an account of his adventures--_Headpiece_ 78

Rob sat staring eagerly at the Demon--_Tailpiece_ 85

The Being drew from an inner pocket something resembling a box--_Headpiece_ 86

These spectacles will indicate the character of every one you meet--_Tailpiece_ 96

Rob is in truth a typical American boy--_Headpiece_ 97

Rob placed the indicator to a point north of east and began his journey--_Tailpiece_ 103

A crowd assembled, all shouting and pointing toward him in wonder--_Headpiece_ 104

A man rushed toward it, but the next moment he threw up his hands and fell unconscious 108

Rob reached the entrance of the palace, only to face another group of guardsmen 114