"You can't blame him," said Tad, rising from his perilous position and walking calmly back to them. "I nearly got them myself."
"Got what?" demanded Stacy.
"The jiggers."
"That's it. That describes it."
Professor Zepplin, who had informed himself before starting out, now turned suddenly upon them.
"He's going to give us a lecture. Listen," whispered Tad.
"Young gentlemen, you have, perhaps, little idea of the vastness of that upon which you are now gazing."
"We know it is the biggest thing in the world, Professor," said Ned.
"Imagine, if you can," continued the Professor, without heeding the interruption, "that this amphitheatre is a real theatre. Allowing twice as much room as is given for the seat of each person in the most comfortable theatre in the world, and you could seat here an audience of two hundred and fifty millions of people. These would all be in the boxes on this side."
The boys opened their eyes at the magnitude of the figures.