Strange as was the form, the meaning was clear enough; so Ida hastened to her room, and had hardly slipped on her light grey cycling dress when she saw the tandem with its large occupant at the door. He handed her up to her saddle with a more solemn and thoughtful face than was usual with him, and a few moments later they were flying along the beautiful, smooth suburban roads in the direction of Forest Hill. The great limbs of the athlete made the heavy machine spring and quiver with every stroke; while the mignon grey figure with the laughing face, and the golden curls blowing from under the little pink-banded straw hat, simply held firmly to her perch, and let the treadles whirl round beneath her feet. Mile after mile they flew, the wind beating in her face, the trees dancing past in two long ranks on either side, until they had passed round Croydon and were approaching Norwood once more from the further side. "Aren't you tired?" she asked, glancing over her shoulder and turning towards him a little pink ear, a fluffy golden curl, and one blue eye twinkling from the very corner of its lid. "Not a bit. I am just getting my swing." "Isn't it wonderful to be strong? You always remind me of a steamengine." "Why a steamengine?" "Well, because it is so powerful, and reliable, and unreasoning. Well, I didn't mean that last, you know, but--but--you know what I mean. What is the matter with you?" "Why?" "Because you have something on your mind. You have not laughed once." He broke into a gruesome laugh. "I am quite jolly," said he. "Oh, no, you are not. And why did you write me such a dreadfully stiff letter?" "There now," he cried, "I was sure it was stiff. I said it was absurdly stiff." "Then why write it?" "It wasn't my own composition." "Whose then? Your aunt's?" "Oh, no. It was a person of the name of Slattery." "Goodness! Who is he?" "I knew it would come out, I felt that it would. You've heard of Slattery the author?" "Never." "He is wonderful at expressing himself. He wrote a book called 'The Secret Solved; or, Letter-writing Made Easy.' It gives you models of all sorts of letters." Ida burst out laughing. "So you actually copied one." "It was to invite a young lady to a picnic, but I set to work and soon got it changed so that it would do very well. Slattery seems never to have asked any one to ride a tandem. But when I had written it, it seemed so dreadfully stiff that I had to put a little beginning and end of my own, which seemed to brighten it up a good deal." "I thought there was something funny about the beginning and end." "Did you? Fancy your noticing the difference in style. How quick you are! I am very slow at things like that. I ought to have been a woodman, or game-keeper, or something. I was made on those lines. But I have found something now." "What is that, then?"