"That is Sneffels—a mountain about five thousand feet
in height, one of the most remarkable in the whole island,
and certainly doomed to be the most celebrated in the world,
for through its crater we shall reach the Center of the
Earth."
"Impossible!" cried I, startled and shocked at the thought.
"Why impossible?" said Professor Hardwigg in his severest tones.
"Because its crater is choked with lava, by burning rocks —by infinite dangers."
"But if it be extinct?"
"That would make a difference."
"Of course it would. There are about three hundred volcanoes on the whole surface of the globe—but the greater number are extinct. Of these Sneffels is one. No eruption has occurred since 1219—in fact it has ceased to be a volcano at all."
After this what more could I say? Yes—I thought of another objection. "But what is all this about Scartaris and the kalends of July—?"
My uncle reflected deeply. Presently he gave forth the result of his reflections in a sententious tone. "What appears obscure to you, to me is light. This very phrase shows how particular Saknussemm is in his directions. The Sneffels' mountain has many craters. He is careful therefore to point the exact one which is the highway into the Interior of the Earth. He lets us know, for this purpose, that about the end of the month of June, the shadow of Mount Scartaris falls upon the one crater. There can be no doubt about the matter."
My uncle had an answer for everything. "I accept all your explanations," I said, "and Saknussemm is right. He found out the entrance to the bowels of the earth, he has indicated correctly, but that he or anyone else ever followed up the discovery, is madness to suppose."
"Why so, young man?"
"All scientific teaching, theoretical and practical, shows it to be impossible."
"I care nothing for theories," retorted my uncle.
"But is it not well-known that heat increases one degree for every seventy feet you descend into the earth? which
