Walter Charleton is an intriguing character--he flits through the diaries of Pepys and Evelyn, the correspondence of Margaret Cavendish, and his texts appear in the libraries of better-known contemporaries. We catch sight of him 1 conversing with Pepys about teeth, arguing with Inigo Jones about the origin of 2 Stonehenge, being lampooned in contemporary satire, stealing from the Royal Society, and embarrassing himself in anatomical procedures. While extremely active in a broad range of Royal Society investigations, his main discovery there seems to have been that tadpoles turned into frogs....