THEORY OF ASTROLOGICAL PREDICTION
The general theory of astrological prediction is that the natal horoscope contains within itself, like the seeds of a vegetable or the egg of an animal, all the potencies for form, life and intelligence and all the possibilities of fate and fortune that can come to the person in his lifetime.
The particular time when these potencies and possibilities of the natal horoscope may take effect in the life is to be discovered by examining the motions of the heavenly bodies subsequent to birth.
The most obvious system of motion of the heavenly bodies which may be used for prognostication relative to the natal horoscope is that of the transits, as they are called, of the planets that are constantly occurring throughout the life.
At the same time, transits are the most remote from the time of birth and hence are the weakest indications that may be used for prediction.
All other systems of prediction except transits are symbolical in nature and depend upon the principle of correspondences to account for the results.
The system of prediction most commonly used after transits is that of the progressed horoscope, as it is called.
The theory of this system is that of the correspondences between the cycle of the day and the cycle of the year.
The first day after birth the heavenly bodies describe the nature of the heavenly influences throughout the first year of life.
The second day after birth likewise discovers the nature of the second year of life, and so for each year of life there is a corresponding day after birth that may be used as an index to unravel the cause of the changes and events of life.
This system of the progressed horoscope has the advantage over the system of transits that the motions are much nearer in time to the birth, and hence may be considered as more deep-seated in effect.
Nevertheless, these two systems, namely, transits and progressed horoscope, are not to be considered opposed or antagonistic, but rather that they are mutually cooperative toward the one result of a more perfect understanding of the nature, opportunities and manifestation of the individual life and fortune.
Progression and Direction:
Two closely related systems for timing events or predicting future conditions for a given individual based on the motions of the Earth and other planets in the days following (and sometimes preceding) birth.
In both systems the positions of the planets, Ascendant, and Mid-heaven in the natal chart are moved forward (or backward) in time according to a given formula.
For example, in secondary progressions (sometimes called secondary directions), the system most widely used by modern astrologers, the formula is "a day for a year."
This means that each day following birth is regarded as equivalent to a year in the life of the native, and the positions of the planets on the thirtieth day after birth, for example, as well as the aspects they form with natal planets, are regarded as symbolic of conditions during the thirtieth year.
In primary directions, on the other hand, the formula is "a degree for a year"; that is, a degree of Right Ascension is regarded as equivalent to a year in the life of the native.
According to this system, the number of degrees a planet or point must travel in order to form an exact aspect with a natal planet is translated into years of age in the life of the native.
Progression is based on the actual orbital motions of the planets along the Ecliptic, whereas direction is based on the apparent motions of the planets as a result of the Earth's rotation on its axis.
Thus in progressions, the bodies move at different rates of speed and sometimes in different directions (that is, they can be retrograde), whereas in directions, the bodies move at the same rate of speed and in the same direction.