"I'm wrong," said the Chemist, as the others came up. "It's not so high all the way through. We shall have to make ourselves much smaller than this."
"This is a good time to eat," suggested the Very Young Man. The others agreed, and without making themselves any smaller—the Big Business Man objected to that procedure—they sat down before the mouth of the tunnel and ate a somewhat frugal meal.
"Have you any plans for the trip up?" asked the Doctor of the Chemist while they were eating.
"I have," interjected the Big Business Man, and the Chemist answered:
"Yes, I am sure I can make it far easier than it was for me before. I'll tell you as we go up; the first thing is to get through the tunnels."
"I don't anticipate much difficulty in that," the Doctor said. "Do you?"
The Chemist shook his head. "No, I don't."
"But we mustn't take any chances," put in the Big Business Man quickly. "How small do you suppose we should make ourselves?"
The Chemist looked at the tunnel opening. "About half that," he replied.
"Not at the start," said the Big Business Man. "Let's go in as large as possible; we can get smaller when we have to."