1 Of Circles and Shadows – Part I 2 Of Circles and Shadows – Part II 3 Of Circles and Shadows – Part III 4 Of Circles and Shadows – Part IV 5 Of Circles and Shadows – Part V 6 Of Circles and Shadows – Part VI 7 Of Circles and Shadows – Part VII 8 Of Circles and Shadows – Part VIII 9 Of Circles and Shadows – Part IX 10 Of Circles and Shadows – Part X 11 Of Circles and Shadows – Part XI 12 Of Circles and Shadows – Part XII 13 Of Circles and Shadows – Part XIII 14 Of Circles and Shadows – Part XIV 15 Of Circles and Shadows – Part XV 16 Of Circles and Shadows – Part XVI 17 Of Circles and Shadows – Part XVII