《Tetrabiblos》The TriplicitiesClaudius Ptolemy（Ashmand 英譯 1822）
to Saturn and Mercury, Saturn is placed first in order by day and Mercury by night. The quantity of degrees allotted to each planet is also simply regulated in the Chaldaic method; it diminishes in graduation from the quantity given to the planet first in order, so that each successive planet takes one degree less than that which preceded it.
段落 tetra-1-thetriplic-44public-domain (Ashmand 1822)
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