Ptolemy's Tetrabiblos : $b or Quadripartite, being four books of the influence of the stars ... with a preface, explanatory notes, and an appendix containing extracts from the Almagest of Ptolemy and the whole of his Centiloquy, together with a short notice of Mr. Ranger's zodiacal planisphere and an explanatory platePtolemy
Religion
Ptolemy's Tetrabiblos : $b or Quadripartite, being four books of the influence of the stars ... with a preface, explanatory notes, and an appendix containing extracts from the Almagest of Ptolemy and the whole of his Centiloquy, together with a short notice of Mr. Ranger's zodiacal planisphere and an explanatory plate
Ptolemy
Astrology -- Early works to 1800
[46] Whalley has a very lengthy note upon this and the preceding
chapter, to show that Ptolemy here speaks of zodiacal parallels, or
parallels of declination, and to point out the necessity of observing
a planet’s latitude, in order to ascertain its true parallels. It is,
however, to be recollected, that the parallels now alluded to are
distinct from the _mundane parallels_, which are equal distances from
the horizon or meridian, and are considered by Ptolemy in the 14th and
15th Chapters of the 3rd Book of this work; although not under the
express name of mundane parallels.
CHAPTER XIX
SIGNS INCONJUNCT
All signs, between which there does not exist any familiarity in any of
the modes above specified, are inconjunct and separated.
For instance, all signs are inconjunct which are neither commanding
nor obeying, and not beholding each other nor of equal power, as well
as all signs which contain between them the space of one sign only,
or the space of five signs, and which do not at all share in any of
the four prescribed configurations: viz. the opposition, the trine,
the quartile, and the sextile. All parts which are distant from each
other in the space of one sign only are considered inconjunct, because
they are averted, as it were, from each other; and because, although
the said space between them may extend into two signs, the whole only
contains an angle equal to that of one sign: all parts distant from
each other in the space of five signs are also considered inconjunct,
because they divide the whole circle into unequal parts; whereas the
spaces contained in the configurations above mentioned, viz. the
opposition, trine, quartile, and sextile, produce aliquot divisions.[47]
[47] It has never been very clearly shown how the followers of Ptolemy
have reconciled the new aspects (called the semiquadrate, quintile,
sesquiquadrate, biquintile, &c.) with the _veto_ pronounced in this
chapter. Kepler is said to have invented them, and they have been
universally adopted; even Placidus, who has applied Ptolemy’s doctrine
to practice better than any other writer, has availed himself of them,†
and, if the nativities published by him are to be credited, he has
fully established their importance.
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