《Tetrabiblos》Signs InconjunctClaudius Ptolemy（Ashmand 英譯 1822）
All Salmon’s arguments, however, in support of the old Ptolemaic aspects, militate against the new Keplerian ones; and so does the following extract from the “Astrological Discourse” of Sir Christopher Heydon: “For thus, amongst all ordinate planes that may be inscribed, there are two whose sides, joined together, have pre-eminence to take up a semicircle, but only the hexagon, quadrate, and equilateral triangle, answering to the sextile, quartile, and trine irradiated.
段落 tetra-1-signsincon-7public-domain (Ashmand 1822)
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