When scientist Sir Humphry Davy wrote his first book in 1799, only four copies were published. With three copies currently in North America, the fourth was believed to be lost until it recently surfaced in UCL's Special Collections. In this playlist, Bill Lehm, the library cataloger who found the book, and Dr Andrea Sella of UCL Chemistry describe the significance of the book and its re-discovery.See the photos: http://bit.ly/gmEhrGRead more: http://bit.ly/eRnUmB

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