Harmonics in Astrology

John Addey was an astrologer who developed harmonic astrology, a technique for analyzing planetary aspects mathematically that he devised himself, and this 1976 book is his own presentation of that system. As with other primary works in which a practitioner sets out an astrological method he invented, it documents the tradition's own account of the technique and its claimed validity, and the atlas holds it at the tier appropriate to that kind of source rather than to independent verification, since no outside test of harmonic astrology's predictive claims is presented in the book itself. Its value is as the clearest primary statement of what harmonic astrology actually claims and how it is calculated, in the words of the person who created it, rather than as evidence the technique works.