“I’d like to find a ham sandwich right now,” observed Bob.

“It wouldn’t be Chunky if he wasn’t hungry,” laughed Ned. “But I admit I feel somewhat the same way myself.”

“Then we had better go back to the temple and get supper,” advised Jerry.

So back they went, but their progress was slow, because the professor would insist on examining every bit of ruins he came to in order to see if there were not specimens to be gathered or relics to be picked up. His green box was full to overflowing and all his pockets bulged, but he was the happiest of naturalists.

It was dark when they reached the ancient place of worship where the auto had been left, and at Jerry’s suggestion Bob lighted the search-lamp and the other two lights on the machine. This made a brilliant circle of illumination in one place, but threw the rest of the temple into a dense blackness.

“I wouldn’t want to be here all alone,” remarked Bob, looking about and shuddering a bit.

“Why, Chunky? Afraid of ghosts?” asked Ned.

“What was that?” exclaimed Bob, suddenly, starting at a noise.

“A bat,” replied the naturalist. “The place is full of them. I must get some for specimens.”