“Because she ought not to,” howled Joel sturdily. Then he rushed over to Polly; and although he had small love for cats in general, this particular one, being extremely ill-favored and lean, met with his favor. He stroked her poor back.

Arethusa drew near and gazed into Polly's face; seeing which, the cat was safely transferred to Joel, and Polly turned around to the girl.

“Oh, do you want to learn to play on the piano?” asked Polly breathlessly, under cover of the noise going on, for all the other members of the two clubs now took a hand in it. Even Percy unbent enough to interview one of the Corcoran boys.

“Yes, I do,” said Arethusa, clasping her small red hands tightly.

Her eyes widened, and her little thin face, which wasn't a bit pretty, lightened up now in a way that Polly thought was perfectly beautiful.

“Well, I did, when I was a little girl like you”—Polly bent her rosy face very close to Arethusa's—“oh, dreadfully; and I used to drum on the table to make believe I could play.”

“So do I,” cried Arethusa, creeping up close to Polly's neck, “an' th' boys laugh at me. But I keep doin' it.”

“And now, Arethusa, you are really going to learn to play on the piano.” Polly thrilled all over at the announcement, just as she had done when told that she was to take music lessons.

“Not a really and truly piano?” exclaimed Arethusa, lost in amazement.

“Yes, a really and truly piano,” declared Polly positively. “Just think, Arethusa, you can give music lessons and help to take care of your mother.”