The triplicity preserves accordance with an equilateral triangle, and the whole zodiacal orbit is defined by three circles, viz. that of the equinox, and those of the two tropics; the twelve signs are, therefore, distributed among four equilateral triangles. The first triangle, or triplicity, is formed by three masculine signs, Aries, Leo, and Sagittarius, having the Sun, Jupiter, and Mars as lords by house. Mars, however, being contrary in condition to the solar influence, this triplicity receives, as its lords, only Jupiter and the Sun. By day, therefore, the Sun claims the principal co-regency of it, and Jupiter by night. Aries is on the equinoctial circle, Leo on the summer, and Sagittarius on the winter circle. This triplicity is principally northern, owing to the concurrent dominion of Jupiter, who is fruitful and airy, and expressly connected with winds proceeding from the north; it is, however, also north-west, in consequence of being, in some degree, combined with the west by means of the house of Mars, who introduces western breezes and the feminine qualities of that quarter, in consequence of his lunar condition.[50] The second triplicity, formed by Taurus, Virgo, and Capricorn, is allotted to the dominion of the Moon and Venus, since it consists of feminine signs. The Moon rules it by night, and Venus by day. Taurus is on the summer circle, Virgo on the equinoctial, and Capricorn on the winter. This triplicity is southern, in consequence of the dominion of Venus, whose warm and moist influence produces south winds: it, however, additionally receives a mixture of the east, by means of Saturn; for, as Capricorn is the house of that planet, and an eastern sign, Saturn becomes effective of winds from that quarter, and furnishes this triplicity with a mixture of the east, with which quarter he is further connected by means of his solar condition.[51] The third triplicity is composed of Gemini, Libra, and Aquarius, masculine signs. It holds connection with Saturn and Mercury by containing their houses, and is therefore attributed to them, and not to Mars, to which planet it bears no relation. Saturn rules it by day, owing to his condition,[52] and Mercury by night. Gemini is on the summer circle, Libra on the equinoctial, and Aquarius on the winter. This triplicity is principally eastern, by the influence of Saturn; but it becomes north-east by receiving also a mixture of the north from the condition of Jupiter, with which planet Saturn has, in this respect, a diurnal familiarity.[53]