CLAUDIUS PTOLEMY:

TETRABIBLOS

OR THE QUADRIPARTITE MATHEMATICAL TREATISE

5. 0f the Examination of the Countries Affected.

We are to judge of the first portion of the inquiry, which is regional, in the following manner: In the eclipses of sun and moon as they occur, particularly those more easily observed, we shall examine the region of the zodiac in which they take place, and the countries in familiarity with its triangles, and in similar fashion ascertain which of the cities, either from their horoscope at the time of their founding and the position of the luminaries at the time, or from the mid-heaven of the nativity of their then rulers, are sympathetic to the zodiacal sign of the eclipse. And in whatsoever countries or cities we discover a familiarity of this kind, we must suppose that same event will occur which applies, generally speaking, to all of them, particularly to those which bear a relation to the actual zodiacal sign of the eclipse and to those of them in which the eclipse, since it look place above the earth, was visible.




Ptolemy's Tetrabiblos

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