You might call Vreuls' twenty picture puzzles visual anagrams: instead of scrambling letters, she scrambles the parts of simple objects and invites you to rearrange them in your mind's eye. Some--car, kite, sailboat, elephant--are instantly recognizable; the scissors and eyeglasses might take a while; and the pumpkin or the butterfly might keep its secret till you see it assembled on the following page. Ingenious, and they could make a snappy perceptual exercise for home or school--but do forty primer-like outline drawings add up to a book?