A mile of the return journey they had covered when light came to Seymour’s mind.

“I’ve got it” he cried.

“Got what?” asked the millionaire.

“The meaning of those signs on the arch,” was the answer. “I have been trying to recall where I saw those figures before. It has just flashed across me. Do you remember that visit Mervyn and I paid to an island in the South Atlantic?”

“Ayuti?”

“The same. Well, it was there I saw the signs. Both Mervyn and I learnt the language during our stay.”

“Then I take it you can read them hieroglyphics?”

“I can,” returned Seymour. “The six signs meant ‘Leino yos tragumee!’”

“I’d be almighty obliged if you’d translate the same. I guess my list of languages don’t include Ayuti.”

“It is a warning,” Seymour murmured reflectively, “and one that we cannot afford to neglect, though I cannot imagine why it was given, or why it should be in the language of Ayuti.”