《Tetrabiblos》Mutual Configurations Of The SignsClaudius Ptolemy（Ashmand 英譯 1822）
Whalley quotes the opinion of Placidus, which he says is farther confirmed by the 12th Chapter of the 3rd Book of this very treatise, where it is stated that the ascendant and the eleventh house are in sextile to each other; the ascendant and the mid-heaven in quartile; the ascendant and the ninth house in trine; and the ascendant and the occidental angle in opposition; all which certainly seems to be applicable to mundane aspects in particular.
段落 tetra-1-mutualconf-8public-domain (Ashmand 1822)
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