Down the street Nan and Bert pulled Flossie and Freddie in the little express wagon, with Snap running on ahead and barking in delight. This was the best part of the day for him—when the children came home from school. Flossie and Freddie came first, and then Nan and Bert, and then the fun started.
"Now don't run too fast!" exclaimed Flossie, as the express wagon began to bounce over the uneven sidewalk.
"Oh, yes, let's go real fast!" cried Freddie. "Let's go as fast as the fire engines go."
"We can't run as fast as that, Freddie," declared Nan, who was almost out of breath. "We'll just run regular."
And then she and Bert pulled the younger twins around for a little ride in the express wagon before they did the errand on which they had been sent.
"I had a letter from Mr. Martin to-day," said Mr. Bobbsey at the supper table that evening. "He asked to be remembered to you," he said to Mrs. Bobbsey. "And Billy and Nell sent their love to you children."
"They got safely back to Washington, did they?" asked Mrs. Bobbsey.
"Yes," her husband answered. "And they said they had had a very nice visit here. They are anxious to have us come to Washington to see them."
"Can we go?" asked Nan.
"Well, perhaps, some day," said her father.