shocks now, and, when he saw that his precious machinery was not damaged he could view the earth tremors calmly.
"Slight!" exclaimed Mr. Jenks. "Well, I don't call it so. But I see Captain Mentor and Mr. Hosbrook coming. Please don't say anything to them about the diamonds. I'll see you again," and with that, the queer Mr. Jenks walked away.
"We came to see if you were hurt," called the captain, as he neared the young inventor.
"No, I'm all right. How about the others?"
"Only frightened," replied the yacht owner. "This is getting awful. I hoped we were free from the shocks, but they still continue."
"And I guess they will," added Tom. "We certainly are on Earthquake Island!"
"Mr. Parker, the scientist, says this last shock bears out his theory," went on the millionaire. "He says it will be only a question of a few days when the whole island will disappear."
"Comforting, to say the least," commented Tom.
"I should say so. But what are you doing, Mr. Swift?"
"Trying an experiment," answered the young inventor, in some confusion. He was not yet ready to talk about his plans.
