"Occult Chemistry" is a book co-authored by Annie Besant and Charles Webster Leadbeater. Annie Besant (1847-1933) and Charles Leadbeater (1847-1934) were prominent figures in the Theosophical Society, and their collaboration resulted in several works exploring spiritual, esoteric, and occult topics. Published in 1908, "Occult Chemistry" delves into the authors' clairvoyant investigations into the nature of matter, particularly at the atomic and subatomic levels. The book claims to provide insights gained through psychic observation, describing the structure and characteristics of various elements and compounds. It's important to note that the ideas presented in "Occult Chemistry" are not recognized or supported by mainstream scientific understanding. The work is considered part of the Theosophical literature, which combines spiritual and mystical perspectives on science. Readers interested in esoteric and Theosophical perspectives on the nature of matter may find "Occult Chemistry" to be a fascinating exploration, but it is not a scientifically accepted or conventional source on the subject.