The arithmetic examination was almost the last on the list. And most of the girls who had expended their energies on previous subjects looked with dismay at the long list of difficult examples. Olive glanced at the others to see what they thought of it, but Elsa was beginning to write steadily, and Monica, catching her eye, gave her a reassuring smile; it seemed rather a nice paper to her. Amethyst, who was no mathematician, was biting the end of her penholder and looking frantic. Olive was just going to dip her pen in the ink and begin to inscribe her name elaborately on the top sheet of the ruled paper before her, when something made her look in Lily Howell’s direction just in time to see an ugly expression of malignant jealousy sweep over her face, as she observed Monica steadily applying herself to answer the questions which appalled her rival. "There’ll be awful ructions in that quarter, if Monica comes out top, as I do hope she will," soliloquised Olive, and then a reproving glance from Miss Churchill warned her to get on with her work. For an hour no sound was heard but the scratching of pens and the rustling of paper, except now and then when a long-drawn sigh escaped the lips of one or other of the girls, as she realised her inability to solve a difficult problem. By that time Olive had come to the end of her resources and could do no more, so she fastened her papers together and then began to look about at the other girls with a view to seeing how they were getting on. Her desk was in one corner of the room, and Monica (who long since had had to be moved to a distance from Olive, on account of whispering) was in the centre of the second row quite near the front. Lily Howell and her ally, Maggie Masters, were next to each other in the opposite corner from Olive’s. A glance at Monica showed her to be still hard at work over her paper, so Olive turned her attention elsewhere. As she looked across at Lily, their eyes met, and Olive turned away quickly, for she did not want to get into trouble with Miss Churchill, who might think they were communicating with each other in some way; but a peculiar expression she had seen in Lily’s light grey orbs impelled her to look again a few seconds later, and then what she saw horrified her, and her eyes seemed rooted to the spot! For Lily was positively making copious use of the contents of some little note-book or paper, (Olive could not detect which) that was cleverly hidden, on the desk, by Maggie’s pencil-box, from Miss Churchill’s view.