Charles Jayne focuses on the complexities of progressions and directions in this volume that includes insightful information and clear instructions about:Secondary, or Major, ProgressionsMinor ProgressionsTertiary ProgressionsPrimary DirectionsSymbolic DirectionsSingle, Double, and Triple InterpolationRight AscensionAlso included are extensive examples and useful tables, as well as a thorough explanation of the various methods of angle progression.Charles Jayne, long noted for his pioneering research in astrology, was particularly interested in the astronomical basis of astrology as well as its technical aspects.