《Tetrabiblos》The Time And Period Of The EventClaudius Ptolemy（Ashmand 英譯 1822）
A particular explanation of the astronomical use, both of temporal and equatorial hours, is to be found in the 9th Chapter of the second Book of the Almagest; an extract from which is given in the Appendix.
段落 tetra-2-thetimeand-9public-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。