He was almost sure that Ralph could not have lifted that great mass of stone which formed the lid covering the opening of the mound, for it had required all his own strength to do it; and then, if anything of this sort had really happened, the letters he had received from Edna and the boy must have been most carefully written with the intention to deceive him.
[Illustration: Holding his lantern over the opening he gazed down into the mound.] The letter from Edna, which in tone and style was a close imitation of his own to her, had been a strictly business communication.

It told everything which happened after the arrival of the Mary Bartlett, and gave him no reason to suppose that any one could have had a chance to pillage the mound.

Ralph's letter had been even more definite.

It was constructed like an official report, and when the captain had read it, he had thought that the boy had probably taken great pride in its preparation.

It was as guardian of the treasure mound that Ralph wrote, and his remarks were almost entirely confined to this important trust.
He briefly reported to the captain that, since his departure, no one had been in the recess of the cave where the mound was situated, and he described in detail the plan by which he had established Edna behind the wall in the passage, so as to prevent any of the sailors from the ship from making explorations.