Rosario had several, not least among them how did your last house fall into the sea?. As Merlin spoke, her eyes travelled along the shelves again. Old books, he'd told her on the weekend: all kinds, not just the occult variety. Sciences. Medicine, geology, astronomy. She couldn't make out any titles from where she was standing (though the urge to take a closer look was strong), but she could see a lot of thick leather covers and dog-eared spines and faded dust jackets. "You want to systematise things? Like a catalogue? How many books do you have?"