"Dynamite--did they use dynamite to blow the mountains up into such
shapes as that?" asked Stacy innocently.

"I said nothing about dynamite. Dynamic was the word I used," replied
Professor Zepplin, casting a withering glance at the fat boy.

"Oh," Stacy exclaimed.

"It is therefore called the 'Ozark Uplift.'"

"That is interesting," answered Ned solemnly, though it is doubtful if
he understood what the Professor was really talking about.

"There is still another of tremendous import connected with this
region. You will all be interested in it," announced the Professor
impressively.

The boys gathered about him in a circle, meantime allowing their
ponies to nibble at the green leaves.

"Yes," urged Tad.

"The region where is now located the Ozark Uplift is said to have been
the first land to appear above the waters of the continental ocean."

"You--you mean--" stammered Ned.

"He means this was the first land to appear above the water when this
continent was all an ocean," spoke up Tad, with quick understanding.