"Perhaps he's gone fishing," said Frank.
He was looking about the cave and suddenly his gaze fell on a small cupboard, consisting of a box on a ledge of rock, in which he could see a number of books. He gave a low whistle of surprise.
"The worthy captain has a library," remarked Joe.
"Let's see what his taste in reading matter is like."
Frank went over to the improvised cupboard and picked up one of the books. It fell open and a number of strips of paper fluttered to the floor of the cave.
Frank bent to pick up the papers. He looked at them curiously.
"Newspaper clippings!"
"We might get a clue about him from them," Joe suggested.
In the dim light, Frank scrutinized one of the clippings. It was a despatch from Boston, dated several months previous, and consisted of an address on Egyptian civilization given by a world-famous traveler who had spoken in that city.
"This is uncommonly dull, if you ask me," said Frank at last, putting the clipping aside and picking up another.