the boxes and bales, the giant guards did not seem at all alarmed. They did not even take the trouble to stop the work, though they looked in the windows. In a short time there was a sort of hollow square formed in the middle of the big main room, and inside of this our friends could give battle.
"And now for my plan of teaching these giants a lesson," said Tom, when this work was finished. "Ned, help me open this box," and he indicated one with his initials on in red letters.
"That's the same one you saved from the fire in the ship," commented Ned.
"Yes, and I can't put it to just exactly the use I intended, as the situation has changed—for the worse I may say. But this box will answer a good purpose," and Tom and Ned proceeded to open the mysterious case which the young in ventor had transported with such care.
"Bless my cannon cracker!" exclaimed Mr. Damon who watched them. "You're as careful of that as if it contained dynamite."
"It does contain something like that," answered Tom. "It has some blasting powder in, and I was going to use it to show the giants how little their strength would prevail against the power which the white man could secure from some harmless looking powder. There are also
