¹Theorema XXV A   Diaphanorum pars secunda Theorema XXV C   DIAPHANORUM LIBER SECUNDUS De Iride THEOREMA XXV S
²PARS SECUNDA in interl. A¹   om. A C S
³roridam A C² S   totidem C
⁴ necesse est A   om. C S
⁵quod A C S    signo posito in marg. C^2
6Et A   om. C S
⁷ante abf del. fbg A
⁸acg A S   AG C   C in interl. inser. C^2
9quantitatem bg A   differentiam rectorum AB, AC, AD C   differentiam rectarum AB, AC, AD S
¹⁰sed A   et C S
¹¹angulos A   angulum C S
¹²post refractio del. fiat A
¹³proveniat A   perveniat C S
¹⁴experientia et ratione A   ratione et experientia C S
¹⁵convenit A   constant C   constat C² S
¹⁶1/2 A C   dimidium S
¹⁷Ideo A   om. C S
¹⁸ag A   AD C S
¹⁹aequilatera A   aequiangula C S
²⁰post Quare inser. cum latus FG sit commune, erunt C S
²¹bg ˜ aequales A C S    del. et iter. in interl. C^2
22lineae A   om. C S
²³a locis refractionum A   alias lineas refractionum C S
²⁴aequales A   aequales esse C S
²⁵fit A C   sit S
²⁶atque ideo A   ideo C   ideoque S    in marg. C^2
27refractionum A   infractionum C S
²⁸oportere C S    signo posito in marg. A
²⁹reflecti A   inflecti C S
³⁰quaerunt A C² S   queunt C
³¹Corollarium A   Corollarium 1 C   Corollaria 1 S
³²ergo A   igitur C S
³³ac A   et C S
³⁴Corollarium A   Corollarium 2 C   2 S
³⁵1/2 A C   dimidium S
³⁶post et del. qui ad g rectus erit A
³⁷1/2 A C   dimidium S