《Tetrabiblos》Signs InconjunctClaudius Ptolemy（Ashmand 英譯 1822）
Kepler is said to have invented them, and they have been universally adopted; even Placidus, who has applied Ptolemy’s doctrine to practice better than any other writer, has availed himself of them,† and, if the nativities published by him are to be credited, he has fully established their importance.
段落 tetra-1-signsincon-5public-domain (Ashmand 1822)
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