Stella wished they could; but her sense of duty came to her aid, and she said, 'That is quite impossible, Vava; we must stay in London. So the best thing we can do is to try and be as happy as we can here, and do our duty. We will live upon as little as we can, and save money, so that we can go away for our holidays.' These same holidays, if she had but known it, were a most unusual thing; for Stella was to have a month in the summer, and ten days at Easter. And the two began to plan a delightful Easter at the seaside somewhere, and by the time they got home to their lodgings Vava was quite cheerful again. CHAPTER VII. KIND-HEARTED LONDONERS. 'Oh Stella, it's a mist, a blacky-yellow mist--I mean a fog! How horrid! What shall I do here all by myself while you are in the City? And how will you get there? I shall be so frightened all the morning, thinking you are lost. Can't I come with you? I will sit quite quietly in your room while you are writing, and perhaps I could help you!' cried Vava on the second Saturday morning, when she woke up to find London quite dark and enveloped in a yellow fog. 'I can't take you with me, Vava; it would never do. That is not my room; it is Messrs Baines & Jones's room. If I brought you there to help me it would look as if I had too much to do, which is not true,' replied Stella. 'Then let me stop with Mrs. Ryan. I will do my lessons, and sew that horrid piece of needlework I have to get done by next sewing-lesson. Don't leave me in this poky little place by myself,' pleaded Vava. As a matter of fact, Stella hated these Saturdays, when she had to go to the City alone, because Vava had no school that day, and to-day she was really nervous of the fog. So she said doubtfully, 'If you promise to stop quietly in Mrs. Ryan's room, and not go out of it on any excuse until I come to fetch you, I will take you, though it is rather extravagant, for we shall have to go by omnibus.' 'Never mind, it will be my Saturday's treat,' said Vava; and the two set out for the City. Mrs. Ryan held up her hands at sight of them. 'There's brave young ladies! Not one of the young ladies of Philips's downstairs have come yet, and three of them that live some way off have sent telephone messages to say it's too thick their way, and they want to be excused.' 'I want to be excused for bringing Vava. She would not be left alone, and was sure you would not mind her sitting quietly in your room doing her lessons. I hope you will not mind?' said Stella. 'Mind! Why, I'm only too glad of a bit of company, and Miss Vava's as welcome as the sunshine would be, for it's what she reminds me of!' cried Mrs. Ryan heartily. Mr. James looked up in surprise at sight of Stella. 'Miss Wharton! I did not expect you to-day; it is one of the worst fogs we have had for years. I wonder you found your way, as you are not used to London!' he exclaimed.