《Tetrabiblos》The Zodiacal PlanisphereClaudius Ptolemy（Ashmand 英譯 1822）
To persons conversant with the mathematical part of astronomy, the facility with which a complete representation of zodiacal latitude, declination, the poles of position, crepusculine circles, and other phenomena, may be made by this Planisphere, will be sufficiently obvious from the accompanying Figures.
段落 tetra-4-thezodiaca-32public-domain (Ashmand 1822)
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