In similar manner the return of the Moon to its own place may be taken as a monthly guide to the nature of ensuing events, but it is to be observed that the Moon’s place cannot be taken with the same degree of accuracy as that of the Sun, owing to the varied acceleration of the Moon from hour to hour. The Nautical Almanac gives this hourly acceleration, so that by means of it the Moon’s longitude can be arrived at with great accuracy for any time of the day, but the cheaper ephemerides do not contain more than the longitude for noon and midnight. The student will find, however, that the general purposes of a Lunar horoscope may be served with sufficient accuracy from this source if chief regard be had to the aspects of the Moon at its return and not to the mundane positions of the planets.

Arguing from analogy, one would suppose that a similar horoscope could be made for the return of any of the planets to their radical places, but until we have a popular publication in which the planets’ places are given with a greater degree of accuracy than at present, we cannot pretend to indicate the true time of the revolutions of these bodies.

Another means of prognosis to which some astrologers have attached considerable importance is what is known as

The Synodical Revolution.

This consists of a horoscope set for the time of the Moon’s return to the same distance from the Sun that it held at birth, which distance is called the elongation. This measure is based upon the relative motions of the Sun and Moon in the zodiac after birth. Thus if the mean motion of the Sun for one day be taken as 59′ and that of the Moon as 13° 11′, then the mean elongation of the Moon will be 12° 12′. But the Sun and Moon are both subject to a variation from the mean motion, and thus the elongation of the Moon is an inconstant quantity. The only means of effecting the calculation, therefore, is by reference to the ephemeris for the year of birth. Then, having the Moon’s radical elongation, the successive dates at which this elongation is repeated are to be noted, and each of them is accounted as one year of life. Thus for the 20th year of life one must count 19 synods or conjunctions of the Sun and Moon after birth, and thereafter proceed to fix the date after the last synod at which the Moon’s elongation is the same as that of birth. This idea seems to give grounds for the ancient belief in effects attaching to the Moon’s age. For the Moon’s age denotes the distance of the Moon from the last conjunction with the Sun, and if a person was born on the tenth day of the Moon, then every tenth day of the Moon in successive revolutions will be of importance, since the Moon will be in the same relations with the Sun as at birth. The aspects that the Moon bears to the other celestial bodies at these times is held to be a guide to the nature of succeeding events. But more attention is paid to such horoscopes thus calculated wherein the Moon falls on the place of any of the planets at birth.

Ingresses

are of two kinds, mundane and zodiacal. A mundane ingress is made when a planet in the heavens comes to the cusp of one of the Houses in the horoscope of birth—that is to say, to the degree of the zodiac which held the cusp of such House. Thus if the 8th degree of the sign Aquarius were on the cusp of the 2nd House of the horoscope and Saturn in the heavens made transit of that degree of the zodiac, then the Ingress of Saturn to the 2nd House would be effected and would be followed by a period of considerable financial stress. Similarly with other planets in the horoscope. Each will make its periodical transit through the several Houses of the horoscope of birth, and these will be attended by events in terms of the nature of the planet, the House it transits and its affections at birth.

Zodiacal ingresses are those that are made by the planets into the signs of the zodiac successively, and it is held that a change in the trend of affairs will take place in that department of the life ruled by the House wherein that sign is placed at birth. This, however, appears to be an extension of the former kind of ingress, and should be taken with some reserve. Certainly it will be found that very marked effects are due to the transits of the planets through the Houses of the horoscope, and if the aspects of these planets in the ephemeris are taken into account, it will be found that a very accurate basis for a forecast of the various incidents of individual life is thereby afforded.

In this connection the periodical synods of the planets should be observed, for it is evident that if we ascribe an influence to the transit of Saturn we must set a still more important value upon the transit of that planet when in conjunction or opposition with any other body in the heavens. Thus the planets Mars and Saturn form their conjunctions in successive signs after an interval of about two years, during which period it may be said that the effects of the last conjunction are in play. Thus Saturn and Mars formed their last conjunction in August, 1911, in the sign Taurus, and, according to the position of that sign in various horoscopes, effects more or less detrimental and disturbing would be experienced during the course of two years after that date.

Jupiter’s period of 12 years will be watched with interest by those who are studying the effects due to its action, for it passes through one sign or one House every year on an average, and therefore constitutes a good chronocrator or time-marker. But Jupiter can effect little for good if at the time of its transit it is afflicted in the heavens by the adverse aspect or conjunction of another planet. Similarly, Saturn or Uranus or Neptune has to be judged according to its condition and aspects at the time of transit or ingress.