Dale broke the embrace with Lyra when he heard the door softly creak open.  A white creature—closely resembling Lyra, save its lack of a horn—walked carefully into the room.  The main drawing in the anatomy book Lyra had brought had looked much the same.  This, then, was a fourth type—the type with neither wings nor horn.  It was pushing a wooden cart with a squeaky wheel.  Atop the cart sat two silver domes, which looked much like the covers fancy restaurants put over their food.  That is, what he supposed fancy restaurants did.  He’d seen these covers in movies and TV shows about chefs, but he’d never eaten at a restaurant that actually used the things.  The closest he’d come to fancy food lids were the silver tops over the Sterno-fueled warmers at weddings.