THE BOYS MAKE A DISCOVERY The boys had landed at a spot that was particularly inviting in appearance, and they stopped for several minutes to take in the natural beauty surrounding them.

There were tall and stately palms, backed up by other trees, trailing vines of great length, and numerous gorgeous flowers.

A sweet scent filled the air, and from the woods in the center of the isle came the song of tropical birds.
"What a fine camping place!" murmured Sam.

"A fellow could spend several weeks here and have lots of fun, bathing and boating, and hunting birds, and fishing," and his brothers agreed with him.
Yet the beauty of Treasure Isle was soon forgotten in their anxiety to locate the cave.

They had a general idea that it was in the center of the horseshoe curve, and that center was quite a distance from where they had been brought ashore.
"The best we can do is to tramp along the water's edge," said Dick.
"Then when we reach the center we can go inland." "We haven't over an hour," replied his youngest brother.