Aspects of the Signs  ·  April 19, 2019, 10:26 GMT
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Aspects of the Signs

Aspects of the Signs - from Tetrabiblos by Claudius Ptolemy

Of the parts of the zodiac those first are familiar one to another which are in aspect. These are the ones which are in opposition, enclosing two right angles, six signs, and 180 degrees; those which are in trine, enclosing one and one-third right angles, four signs, and 120 degrees; those which are said to be in quartile, enclosing one right angle, three signs, and 90 degrees, and finally those that occupy the sextile position, enclosing two-thirds of a right angle, two signs, and 60 degrees.


We may learn from the following why only these intervals have been taken into consideration. The explanation of opposition is immediately obvious, because it causes the signs to meet on one straight line. But if we take the two fractions and the two superparticulars most important in music, and if the fractions one-half and one-third be applied to opposition, composed of two right angles, the half makes the quartile and the third the sextile and trine. Of the superparticulars, if the sesquialter and sesquitertian be applied to the quartile interval of one right angle, which lies between them, the sesquialter makes the ratio of the quartile to the sextile and the sesquitertian that of trine to quartile. Of these aspects trine and sextile are called harmonious because they ara composed of signs of the same kind, either entirely of feminine or entirely of masculine signs; while quartile and opposition are disharmonious because they are composed of signs of opposite kinds.


Tetrabiblos - Table of contents:  

Book I

BOOK I - Introduction
Knowledge by Astronomical Means
That it is also Beneficial
Power of the Planets
Beneficent and Maleficent Planets
Masculine and Feminine Planets
Diurnal and Nocturnal Planets
Power of the Aspects to the Sun
Power of the Fixed Stars
Effect of the Seasons and of the Four Angles
Solstitial, Equinoctial, Solid, and Bicorporeal Signs
Masculine and Feminine Signs
Aspects of the Signs
Commanding and Obeying Signs
Signs which Behold each other and Signs of Equal Power
Disjunct Signs
Houses of the Several Planets
Triangles
Exaltations
Disposition of Terms
According to the Chaldaeans
Places and Degrees
Faces, Chariots, and the Like
Applications and Separations and the Other Powers

Book II

BOOK II - Introduction
Characteristics of the Inhabitants of the General Climes
Familiarities between Countries and the Triplicities and Stars
Method of Making Particular Predictions
Examination of the Countries Affected
Time of the Predicted Events
Class of those Affected
Quality of the Predicted Event
Colours of Eclipses, Comets, and the Like
New Moon of the Year
Nature of the Signs, Part by Part, and their Effect upon the Weather
Investigation of Weather in Detail
Significance of Atmospheric Signs

Book III

BOOK III - Introduction
Degree of the Horoscopic Point
Subdivision of the Science of Nativities
Parents
Brothers and Sisters
Males and Females
Twins
Monsters
Children that are not Reared
Length of Life
Bodily Form and Temperament
Bodily Injuries and Diseases
Quality of the Soul
Diseases of the Soul

Book IV

BOOK IV - Introduction
Material Fortune
Fortune of Dignity
Quality of Action
Marriage
Children
Friends and Enemies
Foreign Travel
Quality of Death
Division of Times