And he held up the package and then made a dive for the outer air, for the garage was now full of smoke.

Dave understood on the instant, and stooped to pick up one end of the burning box. Roger took the other end, and thus they ran from the garage.

Crack! crack! crack! It was the small firecrackers in the box that were beginning to go off, the pieces flying through a lower corner of the burning box.

"Into the back yard with it!" cried Roger. "Keep it away from the buildings!"

"All right, this way!" answered Dave, and then the pair made for something of an open lot behind the kitchen of the mansion and there threw the box on the ground. Crack! bang! crack! went the firecrackers, going off singly and in bunches, until all were shot off.

"It's a pity we didn't save 'em," said Roger, mournfully.

"It's a grand good thing they didn't go off in the garage," returned Dave.

"Well, I saved the big cannon cracker anyway," said Phil, as he walked up at that moment.

"Where did you put it?" questioned Roger, quickly.

"Over there, in a corner of the fence. I didn't want to take any chances, otherwise I might have taken it to the barn."

"Better leave it outside, where it can't do any damage," said Dave.

While talking, the three boys had been running back to the garage. There they found their chums and the men at work, including Senator Morr, all hauling the burning brushwood away and pouring water from a small hose on the flames. The most of the fire was out, so they found little to do.

Only one corner of the garage had been touched, and for this the senator was thankful.

"But it was careless of you, James, to put that brushwood there, so close to the building," he said to the gardener, "Don't do it again."

"If you please, sir, I didn't put the brushwood as close as that,"

replied the gardener, stoutly. "Somebody else did that."

"What!" cried the senator, in surprise.

"I said I didn't put the brushwood so close to the garage, sir,"

repeated the gardener. "I put it right there," and he pointed to a spot about fifteen feet from the rear wall of the building. "I was going to burn it up first thing in the morning,--that is if the young gentlemen didn't want the stuff for a bonfire at night."

"But who did put the brushwood up against the garage?" demanded Senator Morr.

"I'm sure I don't know," put in the chauffeur. "But what James says, sir, is true--he put the heap out there--I was working around the garage when he did it."

"Do you mean to insinuate that this fire was set by somebody?" cried the senator, quickly.

"I don't know about that, sir," answered the chauffeur, while the gardener merely shrugged his shoulders. He was an old man and one who had been trusted by the Morrs for years.

"If what you say is true, I'll have to look into this matter," remarked Senator Morr. "I don't propose to have my garage burnt down, with two automobiles worth five thousand dollars,--not to say anything about the danger to the rest of the place. If I find----"

Bang! It was an explosion like a cannon and made everybody jump. As Dave looked, he saw a corner of a distant fence fly apart, and bits of fire seemed to fill the midnight air. Then followed utter silence.

[Ill.u.s.tration: AS DAVE LOOKED, HE SAW A CORNER OF A DISTANT FENCE FLY APART.]

"The cannon cracker!" gasped Phil.

"What could have made it go off?" asked Roger.

"Some sparks from this fire--or else it was lit when Phil took it out,"

answered Dave.

"What are you talking about?" asked Senator Morr, and when he had been told he shook his head and smiled, grimly.

"Well, I'm glad it didn't go off in the garage," he said. "But after this you must keep your explosives in a safer place. Jake, James, bring some buckets of water and put out that fire from the explosion. It isn't much, but we want no more sparks flying around here."

The water was brought, and soon every spark had been extinguished. Then the crowd went back to the garage, to make sure that no more fire lingered in that vicinity.

"It certainly looks as if somebody had set this fire," mused Senator Morr. "Perhaps a tramp. Have you seen any such fellows around here?" he asked, looking at the others.

The boys had seen no tramps at all, and James said he had seen none for over a week.

"I saw one day before yesterday," said the chauffeur, "but I know he left town that night--I saw him board a freight train."

"Well, it is strange. Keep your eyes open," said Senator Morr, and then he returned to the house, to quiet his wife and retire once more.

"It's mighty queer about that fire," remarked Luke, when the boys were undressing. "It certainly does look as if it was set."

"Dave, do you think Merwell and Haskers would do it?" questioned Roger.

"Yes, if they were in this neighborhood. But have they been here?"

The boys looked at each other. n.o.body had seen Merwell or the former teacher of Oak Hall in that vicinity.

"Let us make some inquiries down at the railroad station in the morning," suggested Dave. "If those two stopped off here somebody must have seen them."

"Phew! what a noise that cannon cracker did make!" murmured Phil. "If we had set that off in the morning--as we intended--I reckon it would have woke up the neighborhood pretty well."

"It did wake some folks up," answered Roger, for quite a few boys and men had come up to find out what the flames and noise meant.

"It was certainly some firecracker," was Luke's comment.

"Say, speaking of firecrackers puts me in mind of a story!" burst out Shadow.

"Wow! A story this time of night!" murmured Buster. "I'm going to bed."

"This is a short one," pleaded the would-be story-teller. "A man was giving a celebration one Fourth of July to a lot of children. He had ordered a lot of firecrackers, but they didn't come. So he sent a telegram to the wholesale house in the city. 'Send big and little crackers as ordered at once.' About an hour afterwards he got a return telegram which said, 'Our grocery department is closed to-day. Your order for crackers will be filled to-morrow.'"

"Call that a crackerjack joke?" asked Roger, with a grin.

"Don't crack any more like that, Shadow," added Dave.

"You might get fired if you do," contributed Phil; and then a general laugh went up, after which all of the boys again retired.

In the morning the lads inspected the vicinity of the fire once more, and spent some time in shooting off a pistol and a shotgun which Roger possessed. Then, acting on a suggestion from Dave, they took a walk to the railroad station.