The Voyage of the Dawn Treader
One thing that worried her a good deal was the size of the Book. The Chief Voice had not been able to give her any idea whereabouts in the Book the spell for making things visible came. He even seemed rather surprised at her asking. He expected her to begin at the beginning and go on till she came to it; it obviously wouldn't have occurred to him that there was any other way of finding a place in a book. (10.15)
She went up to the desk and laid her hand on the book; her fingers tingled when she touched it as if it were full of electricity. She tried to open it but couldn't at first; this, however, was only because it was fastened by two leaden clasps, and when she had undone these it opened easily enough. And what a book it was!
It was written, not printed; written in a clear, even hand, with thick downstrokes and thin upstrokes, very large, easier than print, and so beautiful that Lucy stared at it for a whole minute and forgot about reading it. The paper was crisp and smooth and a nice smell came from it; and in the margins, and round the big coloured capital letters at the beginning of each spell, there were pictures. (10.16-17)
On the next page she came to a spell "for the refreshment of the spirit." The pictures were fewer here but very beautiful. And what Lucy found herself reading was more like a story than a spell. It went on for three pages and before she had read to the bottom of the page she had forgotten that she was reading at all. She was living in the story as if it were real, and all the pictures were real too. When she had got to the third page and come to the end, she said, "That is the loveliest story I've ever read or ever shall read in my whole life. Oh, I wish I could have gone on reading it for ten years. At least I'll read it over again."
But here part of the magic of the Book came into play. You couldn't turn back. The right-hand pages, the ones ahead, could be turned; the left hand pages could not. (10.31-32)