Included in this volume, which is four books in one, are four significant works by Charles Jayne: Horoscope Interpretation Outlined, Introduction to Locality Astrology, Parallels: Their Hidden Meaning, and The Technique of Rectification.
Horoscope Interpretation Outlined explores the basics of chart reading, beginning with the chart as a whole and gradually working to the entire chart. Special sections explore the major chart configurations and the eight lunation cycle phases.
Introduction to Locality Astrology focuses on three methods of shifting the horoscope to a different locality, with complete instructions for each one. Also explained is the Johndro baseline chart, using the Jacqueline Onassis chart as an example.
Parallels: Their Hidden Meaning examines powerful chart configurations in declination that signal the main meaning of the horoscope. In addition to the natal chart, the author discusses transits and progressions.
The tools and techniques of rectification are the main focus of The Technique of Rectification, which includes other factors involved in the process, such as the ascending sign, planets in houses, and horoscope validation.