Frontmatter
Book One
Chapter 1 The Universe is spherical; Chapter 2 The Earth too is spherical
Chapter 3 How Earth forms a single sphere with water
Chapter 4 The motion of the heavenly bodies is uniform, eternal, and circular or compounded of circular motions
Chapter 5 Does circular motion suit the Earth? What is its position?
Chapter 6 The immensity of the heavens compared to the size of the Earth
Chapter 7 Why the ancients thought that the Earth remained at rest in the middle of the universe as its center
Chapter 8 The inadequacy of the previous arguments and a refutation of them
Chapter 9 Can several motions be attributed to the Earth? The center of the universe
Chapter 10 The order of the heavenly spheres
Chapter 11 Proof of the Earth's triple motion
Chapter 12 Straight lines subtended in a circle
36.Folio 12 recto
37.Folio 12 verso
38.Folio 13 recto
39.Folio 13 verso
40.Folio 14 recto
41.Folio 14 verso
42.Folio 15 recto
Table of the straight lines subtended in a circle
Chapter 13 The sides and angles of plane rectilinear triangles
Chapter 14 Spherical triangles
Book Two
Book Three
Book Four
Book Five
Book Six