"No, sir! I want to go to Switzerland," said Jack. "I want to see the great mountains all covered with snowbanks and forests and flowers. There is not a mountain in the whole of Holland."

"Look!" shouted Joe. "I see the first castle! We are sailing right up beside it. I wonder if a really, truly King and Queen are living in it."

"Of course," said Jack, "unless they have been killed and their castle turned into a prison or a museum."

"Do you suppose it has a dark dungeon under it?" asked Joe. "How I should like to see a real dungeon!"

"Come on, father is calling us," said Jack. "Our boat has stopped. It is time to get off."

"Oh! Perhaps father will take us into that old castle, Jack. Then we can see if it really has a dungeon under it," cried Joe.

So the Overall Boys said good-by to their friends on the ocean steamer. They said good-by to the Captain. They said good-by to the Cook. The Cook and the Captain were their special friends and they were specially sorry to leave them.

But the boys had something very important in their minds.

When the heavy plank was pulled over from the dock to the steamer, the two Overall Boys were the first to step on it. They ran as fast as they could run down the steep plank.