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.