《Tetrabiblos》Knowledge May Be Acquired By Astronomy To A Certain ExtentClaudius Ptolemy（Ashmand 英譯 1822）
Fire and air, the first of the sublunary elements, are encompassed and altered by the motions of the æther. These elements in their turn encompass all inferior matter, and vary it as they themselves are varied; acting on earth and water, on plants and animals.[20] [20] The following extract from an old geographical work, framed on the rules of Ptolemy, explains the system on which this action of the æther is made to depend:— “Chap.
段落 tetra-1-knowledgem-2public-domain (Ashmand 1822)
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