At the end of the time that they could spend here, the explorers were well pleased with the eventful days that had passed.

“Now to head for Mollendo,” said Mr. Holton, as one morning he arose early to prepare his possessions for the trip. “We’ve only got about a day before Mr. Lewis’s steamer arrives from the United States, and we must use the time to best advantage.”

The others were ready and climbed into the airplane for the long journey.

Mollendo, the adventurers found after the interesting flight, was much like other cities they had visited. It possessed a very interesting dock, however, which held the boys’ attention for many minutes.

The following day, when it became time for the steamship to arrive, they were on hand to meet the naturalist and the others.

“It’s coming!” cried Joe, pointing excitedly toward the horizon. “And will I be glad to see Dad!”

“I guess we all will,” said Mr. Wallace.

The vessel steamed closer and headed for the port. As it came toward them, the explorers could easily make out someone on the deck whom they recognized. It was Mr. Lewis.