This post started with a discussion I had with Anthony Louis, who wrote this piece about using multiple house systems. He uses quotes from Masha’allah that refer to houses in two different ways – by whole sign, which were referred to as ‘by counting’, and by a quadrant house system, probably Porphyry according to Anthony Louis, which he referred to as ‘by measurement’, meaning measurement from the two angles, Ascendant and Midheaven.
Quadrant house systems take the Ascendant as the cusp of the first house, and the Midheaven as the cusp of the 10th house. For a long time they have been by far the dominant form of house system at use in Western astrology until fairly recent times. Placidus, Koch, Regiomontanus, Porphyry and many others are all examples of popularly used quadrant house systems. They all agree about the four quadrants of the chart, and each have different methods of dividing up the space between the angles to find the intermediate house cusps.
I have been aware for some time that both kinds of house systems appear in the works of Masha’allah, Sahl, Abu Mashar and other Arabic astrologers. References to both kinds of house systems appear widely in their works including those translated by Ben Dykes, and in a conversation with Ben I confirmed that the two kinds of house systems, by counting and by measurement, are all through their works.
What fell into place for me here, was the notion of using both kinds of house systems at the same time. Prior to this I had thought in terms of these astrologers sometimes using one house system and sometimes the other.
That was the new piece that set me on fire. It helped me realize I have been heading in that direction in my own practice for a long time, without really realizing it.
Prior to this I thought along the same lines as Ben Dykes, Demetra George and other traditional astrologers, that whole sign houses signify topics and quadrant houses signify angularity and relative strength. I do think that relative strength, angularity, is best measured by quardrant house.
What we are doing here is something beyond that, using both house systems for topic symbolism, at the same time.
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