Tetrabiblos

Claudius Ptolemy, trans. F. E. Robbins. . Loeb Classical Library 435. Cambridge, MA: Harvard University Press, 1940. Composed c. 150 CE. In Koine Greek, with facing English.

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The standard English reference and the chapter-numbering scheme this site adopts and names. Non-Robbins reprints number the chapters differently, so every locus here is given as Robbins numbering.

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What it is cited for

Where an entry recorded why it leaned on this work, the reason is repeated here. A source cited well outside its own scope is visible in this list before it is visible anywhere else.

Cancer: Domiciles, where the Cancer and Leo assignment to the luminaries is set out.
Claudius Ptolemy: The chapter on length of life, which is where every place-name below appears. Each was cited from it in the house entry it came from before it was gathered here.
Eighth House: For the translator's note recording "Beginning of Death" as this place's conventional Greek name.
Eleventh House: For Ptolemy's own use of "the House of the Good Daemon" as a named prorogative place in his chapter on length of life.
Fifth House: For the translator's note recording "Good Fortune" as this place's conventional Greek name.
First House: For Ptolemy's own use of "the horoscope" as a technical term, and for the translator's note listing the conventional Greek names of the twelve places, of which Ptolemy's running text uses only a handful directly.
Fourth House: For Ptolemy's own method of finding the significators of the parents by planetary nature rather than by house, and for the translator's note recording "lower midheaven," Greek Hypogeion, as this place's conventional name.
Leo: Domiciles, where the Cancer and Leo assignment to the luminaries is set out.
Libra: Domiciles, for Venus's rulership of Libra.
Ninth House: For Ptolemy's own use of "the House of the God" as a named prorogative place in his chapter on length of life.
Precession of the Equinoxes: The tropical convention argued explicitly, by an author who had just treated precession at length in another work.
Second House: For the translator's note recording "Gate of Hades" as the conventional Greek name of this place, one of the several Ptolemy's own text does not use.
Seventh House: For Ptolemy's own use of "the Occident" as a named prorogative place in his chapter on length of life.
Sixth House: For the translator's note recording "Bad Fortune" as this place's conventional Greek name.
Tenth House: For Ptolemy's own extensive use of "the mid-heaven" as a named prorogative place and general point of reference.
Third House: For Ptolemy's own method of finding the significators of siblings from the midheaven and the sign that follows it, which does not use a numbered third house at all, and for the translator's note recording "Goddess" as the conventional Greek name of this place.
Three Reference Frames: Takes the equinoctial and solstitial points as the beginnings of the signs, on the ground that those points are naturally determined whereas the constellation figures have no definite boundaries.
Twelfth House: For Ptolemy's own use of "the House of the Evil Daemon" as a place he names in order to exclude it from the prorogation technique.
William Lilly: For what Ptolemy actually prints, which is the comparison the whole entry turns on.