How they should dress themselves for Mrs. Aarons's Friday was a question as full of interest for our girls as if they had been brought up in the lap of wealth and fashion. They were not so ignorant of the habits and customs of "the world" as not to know that evening dress was required of them on this occasion, and they had not seen so many shop windows and showrooms without learning something of its general features as applied to their sex and to the period. Great were the discussions that went on over the momentous subject. Even their studies at the Public Library lost their interest and importance, it is to be feared, for a day or two, while they were anxiously hesitating, first, whether they should accept the invitation, and, secondly, in what costume they should make their first appearance in polite society. The former of these questions was settled without much trouble. Elizabeth's yearning for "friends," the chance of discovering whom might be missed by missing this unusual opportunity; Patty's thirst for knowledge and experience in all available fields, and Eleanor's habit of peaceably falling in with her sisters' views, overcame the repugnance that all of them entertained to the idea of being patronised by, or beholden for attentions that they could not reciprocate to, Mrs. Aarons, against whom they had conceived a prejudice on the first day of contact with her which a further acquaintance had not tended to lessen. But the latter question was, as I have said, a matter of much debate. Could they afford themselves new frocks?--say, black grenadines that would do for the summer afterwards. This suggestion was inquired into at several shops and of several dressmakers, and then relinquished, but not without a struggle. "We are just recovering ourselves," said Elizabeth, with her note-book before her and her pencil in her hand; "and if we go on as we are doing now we shall be able to save enough to take us to Europe next year without meddling with our house-money. But if we break our rules--well, it will throw us back. And it will be a bad precedent, Patty." "Then we won't break them," said Patty valiantly. "We will go in our black frocks. Perhaps," she added, with some hesitation, "we can find something amongst our mother's things to trim us up a little." "She would like to see us making ourselves look pretty with her things," said Eleanor. "Yes, Nelly. That is what I think. Come along and let us look at that bundle of lace that we put in the bottom drawer of the bureau. Elizabeth, does lace so fine as that _go_ with woollen frocks, do you think? We must not have any incongruities if we can help it."