"thumb. Marie-Laure's father is principal locksmith for the National Museum of Natural History. Between the laboratories, warehouses, four separate public museums, the menagerie, the greenhouses, the acres of medicinal and decorative gardens in the Jardin des Plantes, and a dozen gates and pavilions, her father estimates there are twelve thousand locks in the entire museum complex. No one else knows enough to disagree. All morning he stands at the front of the key pound and distributes keys to employees: zookeepers coming first, office staff arriving in a rush around eight, technicians and librarians and scientific assistants trooping in next, scientists trickling in last. Everything is numbered and color-coded. Every employee from custodians to the director must carry his or her keys at all times. No one is allowed to leave his respective building with keys, and no one is allowed to leave keys on a desk. The museum possesses priceless jade from the thirteenth century, after all, and cavansite from India and rhodochrosite from Colorado; behind a lock her father has designed sits a Florentine dispensary bowl carved from lapis lazuli that specialists travel a thousand miles every year to examine. Her father quizzes her. Vault key or padlock key, Marie? Cupboard key or dead bolt key? He tests her on the locations of displays, on the contents of cabinets. He is continually placing some unexpected thing into her hands: a lightbulb, a fossilized fish, a flamingo feather. For an hour each morning--even Sundays--he makes her sit over a Braille workbook. A is one dot in the upper corner. B is two dots in a vertical line. Jean. Goes. To. The. Baker. Jean. Goes. To. The. Cheese. Maker. In the afternoons he takes her on his rounds. He oils latches, repairs cabinets, polishes escutcheons. He leads her down hallway after hallway into gallery after gallery. Narrow corridors open into immense libraries; glass doors give way to hothouses overflowing with the smells of humus, wet newspaper, and lobelia. There are carpenters' shops, taxidermists' studios, acres of shelves and specimen drawers, whole museums within the museum. Some afternoons he leaves Marie-Laure in the laboratory of Dr. Geffard, an aging mollusk expert whose beard smells permanently of damp wool. Dr. Geffard will stop whatever he is doing and open a bottle of Malbec and tell Marie-Laure in his whispery voice about reefs he visited as a young man: the Seychelles, Belize, Zanzibar. He calls her Laurette; he eats a roasted duck every day at 3 P.M.; his mind accommodates a seemingly inexhaustible catalog of Latin binomial names. On the back wall of Dr. Geffard's lab are cabinets that contain more drawers than she can count, and he lets her open them one after another and hold seashells in her hands--whelks, olives, imperial volutes from Thailand, spider conchs from Polynesia--the museum possesses more than ten thousand specimens, over half the known species in the world, and Marie-Laure gets to handle most of them. "Now that shell, Laurette, belonged to a violet sea snail, a blind snail that lives its whole life on the surface of the sea. As soon as it is released into the ocean, it agitates the water to make bubbles, and"