1
00 - Preface and Author's Introduction
2
01 - I: On Rays Propagated in Straight Lines, Part 1
3
02 - I: On Rays Propagated in Straight Lines, Part 2
5
04 - III: On Refraction, Part 1
6
05 - III: On Refraction, Part 2
7
06 - IV: On the Refraction of the Air
8
07 - V: On the Strange Refraction of Iceland Chrystal, Part 1
9
08 - V: On the Strange Refraction of Iceland Chrystal, Part 2
10
09 - V: On the Strange Refraction of Iceland Chrystal, Part 3
11
10 - V: On the Strange Refraction of Iceland Chrystal, Part 4
12
11 - VI: On the Figures of the Transparent Bodies, Part 1
13
12 - VI: On the Figures of the Transparent Bodies, Part 2