thought, "I never threw any document into the sea!" he answered.
"Never," exclaimed Pencroft.
"Never!" And Ayrton, bowed and departed.
CHAPTER XVIII
BUILDING A TELEGRAPH
"Poor man!" said Herbert, who had rushed to the door, but returned, having seen Ayrton slide down the rope of the lift and disappear in the darkness.
"He will come back," said Cyrus Harding.
"Come now, captain," exclaimed Pencroft, "what does that mean? What! wasn't it Ayrton who threw that bottle into the sea? Who was it then?"
Certainly, if ever a question was necessary, it was that!
"It was he," answered Neb, "he was half mad."
"Yes!" said Herbert, "and he was no longer conscious of what he was doing."
"It can only be explained in that way, my friends," replied Harding quickly, "and I understand now how Ayrton was able to point out exactly the situation of Tabor Island, since the events which had preceded his being left on the Island, had made it known to him."
"However," observed Pencroft, "if he was not yet a brute when he wrote that document, and if he threw it into the sea seven or eight years ago, how is it that the paper has not been injured by damp?"
"That proves," answered Harding, "that Ayrton was deprived of intelligence at a more recent time than he thinks."
"Of course it must be so," replied Pencroft, "without that the fact would be unaccountable."
"Unaccountable indeed," answered the engineer, who did not appear desirous to prolong the conversation.
"But has Ayrton told the truth?" asked the sailor.
"Yes," replied the reporter. "The story which he has told is true in every point. I remember quite well the account in the newspapers of the yacht expedition undertaken by Lord Glenarvan, and its result."
"Ayrton has told the truth," added Harding. "Do not
