The book presents a foundational guide to practical astrology, focusing specifically on genethliacal astrology or the doctrine of nativities. The author begins by establishing the basic alphabet of the heavens, detailing the natures, periods, and types associated with the sun, moon, and planets, alongside the twelve signs of the zodiac and the twelve celestial houses. These elements serve as the structural framework for erecting a horoscope using an ephemeris and tables of houses.
The core of the text instructs the reader on how to read the horoscope methodically. Chapters are dedicated to evaluating the physical constitution, health and sickness, character, and disposition based on planetary aspects and elemental groupings of signs. Particular attention is given to the differentiation between organic and functional traits, as well as the psychological tendencies indicated by the lunar and mercurial positions.
Further sections address the practical applications of horoscopy in daily life. The author explains how to analyze financial prospects, identify the line of least resistance for career choices, determine social position, and evaluate the circumstances surrounding marriage and progeny. Separate chapters cover the rules for judging short journeys and long voyages, as well as the methods for recognizing helpful associations and avoiding harmful enmities.
The final portion of the manual delves into predictive astrology. It outlines the time-measures used to calculate the timing of events through primary directions and planetary transits, explains the significance of eclipses, and details the use of solar revolutions and ingresses. The text concludes with comprehensive illustrative examples, including the analysis of a public figure's horoscope, designed to demonstrate the practical validity of astrological principles.