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Proclus’s life and works, collected by Erasmus Oswald. 2
Concerning the axis and the poles. 4
Concerning the circles of the sphere. 8
Why there are only five parallels in the sphere. 18, 21
Concerning the occultation and rising of the parallels. 21
Concerning the magnitude of the parallels. 28
Concerning the order of the parallels. 32
Concerning the power of the parallels. 33
Concerning the interval of the parallels. 39
Concerning the colures the two principal great circles of the celestial sphere. 43
Concerning the zodiac original: "signifero". 46