The Ripley Scroll is an alchemical manuscript that describes how to make the Philosopher's Stone. It takes its name from George ripley, a canon at Bridlington Priory, Yorkshire, and author of The Compound of Alchymy. The scroll itself is nearly 6 meters long and is full of mystical symbolism. The precise meanings of the alchemical icons are not completely understood and some images were purposefully obscure to protect the secrets of the Philosopher's Stone.