《Tetrabiblos》Signs Beholding Each Other, And Of Equal PowerClaudius Ptolemy（Ashmand 英譯 1822）
Such signs are also said to behold each other, as well for the foregoing reasons, as because each of them rises from one and the same part of the horizon, and sets in one and the same part.[46] [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.
段落 tetra-1-signsbehol-2public-domain (Ashmand 1822)
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