hin an inch of sinking down into the
internal fires. The last time we escaped only by the breadth of a hair;
if he had not had the endurance of a man of iron he would have succumbed
to the heat and we would have been lost. We sank so far down that I
became insensible and never knew a thing till the fresh air revived me.
See, my beard and hair are singed, and look how he is blistered. Poor
fellow! He is a hero." Johnston stepped back and shook the Alphian, but
the poor fellow's head only rolled to one side, showing his bloodshot
eyes. He was insensible.

"He is in a bad fix," said Thorndyke; "where did he come from?"

"Banished like myself; we met over there in the dark and roamed about
together."

"What are you going to do?"

"I don't know; I was following his lead. We will both be put to death if
we are discovered."

"Did he not tell you his plan?"

Johnston started visibly. "Oh, I forgot," he exclaimed. "He declares
that all this vast cavern is in danger. Over in the west we discovered
a hole in the roof through which the ocean is streaming in a torrent.
He calculated that before many hours the water would overflow into the
internal fires and produce a volcanic eruption that will swallow up all
of Alpha."

"Merciful Heaven! and you are hiding here at such a moment? The king
must be informed at once."

Johnston had grown suddenly paler. "It may not be as bad as Branasko
feared, and the king would have no mercy on me and him."

"Leave that to me," said Thorndyke; "I have made a good friend of the
Princess Bernardino. She will tell me what is best to do. Remain here."

In breathless haste, Thorndyke went into the audience chamber.
Fortunately the king was not on his throne, and he caught sight of the
confidential maid of the princess.

She saw him approaching, and withdrew behind a cluster of tall white
jars of porcelain containing rare plants.

"I must see your mistress," he said; "tell her to come to me at once; we
are in great peril!"

The girl swept her eyes over the balconies and the throne and said: "She
is in her apartments, sir; I shall bring her."

"Tell her to meet me at the fountain where we last met," and he hastened
back to the spot mentioned.

She soon came. "What is it?" she asked excitedly.

"Johnston is back," he replied. "He is in the wood there with a fellow
who escaped with him in a disabled flying-machine. He says the sea
has broken through over in the west and is streaming into