《Tetrabiblos》The Degree AscendingClaudius Ptolemy（Ashmand 英譯 1822）
To obviate the difficulty arising from the inaccuracy of these instruments, it seems highly necessary to present some method by which the actually ascending degree of the zodiac may be easily ascertained, in a natural and consistent manner.
段落 tetra-3-thedegreea-4public-domain (Ashmand 1822)
↗ 開啟公有領域原文（Wikisource）此段為公有領域典籍逐字擷取，零 AI 生成；原文亦存繁化前底本，可逐字審計。我們寧可少引、不可錯引——驗不過的引文一律捨棄。