pping
through the air. He experienced the sensation one feels while
descending in an elevator. When he reached a point just above the town
he put the indicator to the zero mark and remained stationary, while he
examined the place. But there was nothing to interest him,
particularly; so after a brief survey he once more ascended and
continued his journey toward the east.

At about two o'clock in the afternoon he reached the city of Boston,
and alighting unobserved in a quiet street he walked around for several
hours enjoying the sights and wondering what people would think of him
if they but knew his remarkable powers. But as he looked just like any
other boy no one noticed him in any way.

It was nearly evening, and Rob had wandered down by the wharves to look
at the shipping, when his attention was called to an ugly looking bull
dog, which ran toward him and began barking ferociously.

"Get out!" said the boy, carelessly, and made a kick at the brute.

The dog uttered a fierce growl and sprang upon him with bared teeth and
flashing red eyes. Instantly Rob drew the electric tube from his
pocket, pointed it at the dog and pressed the button. Almost at the
same moment the dog gave a yelp, rolled over once or twice and lay
still.

"I guess that'll settle him," laughed the boy; but just then he heard
an angry shout, and looking around saw a policeman running toward him.

"Kill me dog, will ye--eh?" yelled the officer; "well, I'll just run ye
in for that same, an' ye'll spend the night in the lockup!" And on he
came, with drawn club in one hand and a big revolver in the other.

"You'll have to catch me first," said Rob, still laughing, and to the
amazement of the policeman he began rising straight into the air.

"Come down here! Come down, or I'll shoot!" shouted the fellow,
flourishing his revolver.

Rob was afraid he would; so, to avoid accidents, he pointed the tube at
him and pressed the button. The red-whiskered policeman keeled over
quite gracefully and fell across the body of the dog, while Rob
continued to mount upward until he was out of sight of those in the
streets.

"That was a narrow escape," he thought, breathing more freely. "I
hated to paralyze that policeman, but he might have sent a bullet after
me. Anyhow, he'll be all right again in an hour, so I needn't worry."

It was beginning to grow dark, and he wondered what he should do next.
Had he possessed any money he would have descended