1 connectantur S connectant C
2 orthogonales S hortogonales C
3 orthogonales C2 S ortogonales C
4 ante Hic del. in sphaera quidem C
5 quod S qui C
6 ideo S id C
7 ergo C2 S G C
8 sunt S1 om. C S
9 Quod coniecimus Sicut C S
10 recta supplevimus
11 circularem C2 S aliquot litterae legi nequeunt in C
12 umbram S1 C umbra S
13 umbra S1 C umbram S