The seventh house, the cusp of which is the western line of the descending horizon, or point where the Son sets; is of great significance in Astrology, being most powerful in marriage and domestic happiness. If Saturn or Mars should happen to be posited in this house, unaided by the assisting beams of Jupiter or Venus; the native is certainly fated (from the malignant aspects of hostile stars) to be unfortunate in the wedded state, and born to lead a life of continual trouble therein. Unhappi-ness in wedlock, arising from the most strange and unaccountable causes, are also the effects of Herschel, when found therein; in which respects the seventh house is certainly more powerful than the Moon or Venus, (which are the Ptolemian Astrologers' chief significators in marriage). In horary questions, the seventh house denotes love questions, contracts, speculations in business, war, or public duels, encounters with thieves, law-suits, public adversaries, partners in trade, and litigation; it is the ascendant of thieves, and describes their persons and occupation.

In State Astrology, it is the house from whence the event of war or peace is predicted. In a battle it denotes the victorious party; it also denotes run-a-ways, outlaws, and the place to which a person is going to remove or change their residence.

Alcabitius, AEdila, Morbecca, and various Arabian Astrologers, according to manuscripts, record the seventh house, as "the house of all contentions, oppositions, contrariences, and things opposed; upon battle, strife, and enmity; fines, pleas, laws, etc,; and is the house of buying, selling, and nuptials; death of enemies, friends of brethren, sons of friends, and the place of theft;" and in compound signification it is said to be "the house signifying the substance of servants, as being the second house to the sixth, in due order; and sisters of brethren, being the third house to the fifth; also the fathers of fathers, being the fourth house to the fourth; and the children of brethren, being the fifth to the third house; also it signifies the death of private enemies, being the eighth to the twelfth house: as also for the same reason, the death of great beasts. Again it signifies the religion and long journeys of friends, being the ninth house to the eleventh; also upon the honor or credit of kings, being the tenth house to the mid-heaven; and also the friends and fortune of religious persons, being the eleventh house to the ninth : as also the private dealings of the absent, and their enemies, as being the twelfth house from the eighth". It is accounted a masculine house, similar to in its rule over the bodily members, which the student can refer to.