Nan stood and regarded the snow at her feet in silence.

"It's right-down mean to back out at the last minute when the party's all made up and the couples all arranged and you've given your word. We've been awfully careful whom we've asked, because we only wanted a certain kind—not alone a certain number. Of course, we could get lots of girls to take your place and jump at the chance; but we prefer you, and you'd given your promise."

Nan ground the snow under her foot until it squeaked.

"I thought you were sick, or something, when you didn't come around," went on Ruth, sternly. "I never imagined for a minute it was because you meant to flunk and leave us in the lurch like this. If I'd thought that I wouldn't have gone to all the trouble I did to save you a place next to John Gardiner when Mary Brewster was fighting tooth and nail to get it."

The pinched snow squeaked again under Nan's grinding heel, this time louder than before.

"It's all nonsense, Miss Blake's not wanting you to go," pursued Ruth. "Everything is as proper as pie, and if the boys get to carrying on a little too much Mrs. Cole will settle them in no time. She's real determined when she makes up her mind. What under the sun does Miss Blake think we are going to do? But that's no matter now. You gave me your word, and you've no right to go back on it. Besides, it'll set us all topsy-turvey with our accounts, for if you don't go of course you won't turn in your share of the tax, and we couldn't ask any one at the last minute just to come as a make-shift and expect her to pay for the privilege. The end of it will be the rest of us will have to make it up, and if you think that's fair I don't!"

"I'll gladly pay my dues," returned Nan, more meekly than Ruth had ever heard her speak. "You can ask any one you choose as my substitute, and say anything you please to explain my not going, and I'll stand by you."

This began to sound serious, and Ruth felt it was time to clinch her argument.

"If you go out Louie Hawes will, too. Her mother said she'd let Lu go if Miss Blake would let you, but that if Miss Blake objected she thought it would be best not to have Lu join. She said she made Lu's going entirely conditional on yours. So, you see, if you back out you'll not alone be breaking your promise, but you'll be breaking up the party and making a mess of it all round. I told Mrs. Hawes you were going, and Lu's heart is set on it. If she has to stay back now, at the last minute like this, it will disappoint her dreadfully, and I wouldn't blame her if she never spoke to you again."

Nan felt that she had been driven into a corner, and that there was but one way out of it. In spite of her strong desire to go with the girls, she had determined to stick to her resolve to stay behind. She had hardly known why she had tried to avoid them all these days. But now she knew. It was because she was afraid they would shake her resolution. Once she would have called herself cowardly for trying to spare herself such temptation, but now she knew better; she saw she had been simply wise. It would not have been brave, but merely reckless, to have done otherwise. She had known ever since Miss Blake spoke that she was free to do as she pleased. That she was held by no promise; that she was compelled by no stronger claim than Miss Blake's disapproval, which might be, after all, only a groundless personal prejudice, she thought. She hardly realized why she felt bound to obey. And now along came Ruth to prove that there were other claims outside Miss Blake's. She remembered perfectly having said that Ruth could count on her. Here was a very definite promise, although it had been made in half-ignorance, and she understood clearly that Ruth meant to make her keep it. Then, again, she was directly responsible for Louie's disappointment, and this seemed to her, as Ruth had intended it should seem, a compelling conclusion. If she had been older her reasoning would not have stopped here, but, as it was, she perceived only two sides to the question, and this that Ruth had just presented seemed infinitely more convincing than the one Miss Blake had tried to make clear to her. Ruth's logic she could understand; the governess' seemed vague and incomprehensible. In one case she had been coerced into making a promise from which she had later been absolved; in the other she had given her word of her own free will, and she was being stoutly held to it. There were other influences at work, but Nan did not know it. She honestly believed she was waiving all considerations but those with which her duty was concerned, and she thought she had done so when she broke out with a sort of impatient groan: