Newton, Alchemy, and the Counterfeiter

Since alchemy has come up a few times -- in hell, and again in heaven, and soon the Sun, here's a book about Newton that has a good chapter on Isaac Newton's efforts at transmutation. The book is actually about Newton's job at the Mint, and how he corraled a master counterfeiter, but it spends a chapter going into some detail about the physicist's alchemical obsession.