"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 see some large boy on the street,
but--"

"I'm big enough!" exclaimed Bert.

"Yes, I believe you are!" agreed the elderly lady, looking at him
through her glasses. "Well, I shall be very thankful to you and your
sister if you will mail the letter for me. And, on your way back, stop
and let me know that you dropped it in the post-office all right."

"We will!" promised Bert, and Nan nodded her head in agreement with him.
Miss Pompret handed over the letter, which was in a large envelope. Nan
and Bert were soon at the post-office with it.