Amplon. Quarto 189, 13-14th century, fols. 67-8, Notae de coloribus.
CLM 444, 14th century, fol. 214, de coloribus faciendis.
CLM 27063, 15th century, fols. 37-8, de coloribus faciendis et remedia.
Florence II-vi-54, 13th century, fols, 1-11, “Incipit de coloribus. Simplices colorum sunt quecumque elementis consequentia ... / ... Explicit de coloribus, incipit de mundo animalium.”
S. Marco X-55, 14th century, fols. 1-4, “Simplices colorum sunt quicumque elementis consequantur ut igni et aeri”; apparently the same treatise as the foregoing.
Vienna 5207, 15th century, fols. 112-6, is a treatise on colors ascribed to Urso; “Primo videamus ... / ... et hec de coloribus summariter dicta sufficiant secundum Ursonem.”
[2552] Rawlinson D, 252, 15th century, fol. 98v.
[2553] Sloane 314, 15th century, fol. 106v.
[2554] Or at least this part of the MS is of the early 13th century. The MS, Amplon. Octavo 32, 11th-14th century, is in part a palimpsest. Our experiment, which occurs at fol. 89, has been printed in Haupt’s Zeitschrift f. d. Alterth., III, 190.
[2555] BN 7337, pp. 45-6, Experimentum naturale unicum (?) et ineffabile.