Complete Works of Euclid, Vol. 7 (Optics and Catoptrics)

IV. I have transcribed the Scholia on Theon’s recension of the Optics from many codices; where V or another older codex was available, I only inspected the younger ones, without collating them, which I have indicated by including the siglum of the uncollated codex in parentheses.

V = Vatican codex 204; see above.
V^1 = a later hand of the same (V man. rec.).
V^2 = a most recent hand of the same.
v^1 = Vatican codex 191, a recent hand (there are no scholia from hand 1).
Vat. = Vatican codex 192, bombycine, 14th century (see Om Scholierne til Euklids Elementer p. 34).
Vat. m. 2 = a later hand of the same.
Vat.^1 = a most recent hand of the same.
R = Vatican codex 202, paper, 14th—15th century (see Om Scholierne til Euklids Elementer p. 34).*)
O = Ottobonian codex Gr. 102, paper, 16th century, ff. 8—22.
F = Laurentian codex XXVIII, 10, paper, 15th century.
A = Ambrosian codex A 101 sup., paper, 15th century.
M = Marcian codex 304, paper, 15th century.
M^1 = a recent hand of the same.
p = Paris codex Gr. 2107, paper, 15th century.
q = Paris codex Gr. 2342, paper, 14th century.
r = Paris codex Gr. 2350, paper, 16th century.
s = Paris codex Gr. 2351, paper, 16th century.
t = Paris codex Gr. 2363, paper, 15th century.
u = Paris codex Gr. 2472, paper, 14th century.
x = Paris codex Gr. 2390, concerning which see above (= p).

*) The scholia nos. 12 and 14 on pp. 254—255 (R^1) were placed here by mistake; they pertain to the ancient Optics, where they are listed among the scholia as nos. 6 and 8, and were taken from Vatican codex 1039 (= Vat.^1).