ground again. Once outside the big stone shaft, they saw a boy come running up with Flossie's hat in his hand.
"Oh, look! Look!" cried the little girl. "There it is! There it is!"
"Is this your hat?" the small boy wanted to know. "I saw it blow out of the window, and I chased it and chased it. I was afraid maybe it would blow into the river."
"It was very nice of you," said Mr. Bobbsey, and he gave the boy twenty-five cents, which pleased that small chap very much.
Flossie's hat was a little dusty, but the pink roses were not soiled, and soon she was wearing it again. Then, smiling and happy, she was ready to go with the others to the next sight-seeing place.
"Where now?" asked Bert, as they started away from the little hill on which the Monument stands.
"I think we'll go to the Smithsonian Museum," said his father. "There are a few things I want to see, though you children may not be very much interested. Then I want to take your mother to the art gallery and after
