“I can’t tell until we develop them.  But the machine seems to be working all right.  I’m going to sail back now, and get some views of our own house from up above.”

They had sailed around the town of Shopton, to the neighboring villages, over woods and fields.  Now they were approaching Shopton again.

“Bless my heart!” suddenly exclaimed Mr. Damon, who was looking toward the earth, as they neared Tom’s house.

“What is it?” asked our hero, glancing up from the picture machine, the registering dial of which he was examining.

“Look there!  At your shop, Tom!  There seems to be a lot of smoke coming from it!”

They were almost over Tom’s shop now, and, as Mr. Damon had said, there was considerable smoke rolling above it.

“I guess Eradicate is burning up papers and trash,” was Ned’s opinion.

Tom looked to where the camera pointed, he was right over his shop now, and could see a dense vapor issuing from the door.

That isn’t Eradicate!” cried the young inventor.  “My shop is on fire!  I’ve got to make a quick drop, and save it!  There are a lot of valuable models, and machines in there!  Send us down, Ned, as fast as she’ll go!”

CHAPTER IX — OFF FOR INDIA

“Bless my hose reel!” cried Mr. Damon, as the airship took a quick lurch toward the earth.  “Things are always happening to you, Tom Swift!  Your shop on fire!  How did it happen?”

“Look!” suddenly cried Ned, before Tom had a chance to answer.  “There’s a man running away from the shop, Tom!”

All saw him, and, as the airship rushed downward it could be seen that he was a fellow dressed in ragged garments, a veritable tramp.

“I guess that fire didn’t happen,” said Tom significantly.  “It was deliberately set.  Oh, if we can only get there before it gains too much headway!”

“I like to catch that fellow!” exclaimed Koku, shaking his big fist at the retreating tramp.  “I fix him!”

On rushed the airship, and the man who had probably started the fire, glanced up at it.  Tom suddenly turned the lens of his Wizard Camera toward him.  The mechanism inside, which had been stopped, started clicking again, as the young inventor switched on the electric current.

“What are you doing?” cried Ned, as he guided the airship toward the shop, whence clouds of smoke were rolling.

“Taking his picture,” replied Tom.  “It may come in useful for evidence.”

But he was not able to get many views of the fellow, for the latter must have suspected what was going on.  He quickly made a dive for the bushes, and was soon lost to sight.  Tom shut off his camera.

“Bless my life preserver!” cried Mr. Damon.  “There comes your father, Tom, and Mrs. Baggert!  They’ve got buckets!  They’re going to put out the fire!”

“Why don’t they think to use the hose?” cried the young inventor, for he had his shop equipped With many hose lines, and an electrically driven pump.  The hose!  The hose, dad!” shouted Tom, but it is doubtful if his father or Mrs. Baggert heard him, for the engine of the airship was making much noise.  However, the two with the buckets looked up, and waved their hands to those on the Flyer.