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134 your plateau, because I have seen it; but I have not as yet satisfied myself that it contains any form of life whatever."

"What you admit, sir, or what you do not admit, is really of inconceivably small importance. I am glad to perceive that the plateau itself has actually obtruded itself upon your intelligence." He glanced up at it, and then, to our amazement, he sprang from his rock, and, seizing Summerlee by the neck, he tilted his face into the air. "Now, sir!" he shouted, hoarse with excitement. "Do I help you to realize that the plateau contains some animal life?"

I have said that a thick fringe of green overhung the edge of the cliff. Out of this there had emerged a black, glistening object. As it came slowly forth and overhung the chasm, we saw that it was a very large snake with a peculiar flat, spade-like head. It wavered and quivered above us for a minute, the morning sun gleaming upon its sleek, sinuous coils. Then it slowly drew inwards and disappeared.

Summerlee had been so interested that he had stood unresisting while Challenger tilted his head into the air. Now he shook his colleague off and came back to his dignity.

"I should be glad, Professor Challenger," said he, "if you could see your way to make any remarks which may occur to you without seizing me by the chin. Even the appearance of a very ordinary rock python does not appear to justify such a liberty."

"But there is life upon the plateau all the same,"