《Tetrabiblos》No. IiClaudius Ptolemy（Ashmand 英譯 1822）
In the latitude of Southern Britain, the 18th degree of Libra would be on the ascendant, of which degree the aggregate times of ascension in that latitude are 206° 44′, from which, if 90 be subtracted, the remainder will be 116° 44′, the right ascension of the mid-heaven answering to the 25th degree of Cancer.
段落 tetra-4-noii-20public-domain (Ashmand 1822)
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