"you might take this letter to the post-office for me. It's very important, and I want it to go out on this mail, but I can't go to the post-office myself. If you Bobbsey twins were bigger I should ask you to take it. Tell me, is the other set of twins larger than you two?"
"No'm; they're smaller," explained Nan "Flossie and Freddie are lots littler than we are."
"But we're big enough to take the letter to the post-office for you, Miss Pompret," said Bert. He had often heard his father and mother speak of this neighbor, and the kindnesses she had done.
"Are you sure you are big enough to go to the post-office for me?" asked Miss Pompret.
"We often go for daddy and mother," said Nan.
"Well, then, if you think your mother wouldn't mind, I would like, very much, to have you go," said Miss Pompret. "The letter is very important, but I can not take it myself, as I have company, and I have no one, just now, who can leave. I thought I might
