"Why, where are we going?" asked Tad.
"We are going to spend the night in the crater of the extinct volcano," said the Professor. "Will not that be a strange experience?"
"Hurrah for the crater!" shouted the boys.
"Speaking of volcanoes, I wish you wouldn't open your mouth so wide,
Ned. It makes me dizzy. I'm afraid I'll fall in," growled Chunky.
CHAPTER IV
A NIGHT IN THE CRATER
"What, climb that mountain?" demanded Stacy.
"Surely. You are not afraid of a mountain, are you?" demanded Tad.
"I'm not afraid of—-of anything, but I'm delicate, I tell yau."
"Just the same, you'll pack about fifty pounds up the side of that hill," jeered Ned Rector.