Brunelleschi, Ghiberti, and "L'occhio" minore of Florence Cathedral.

Florence Cathedral continues to yield surprises, and it is not always necessary to dig for them. A detail as small and seemingly insignificant as a keystone is here revealed as evidence of a trecento project for a set of minor lanterns. Ironically, but for good reasons, this scheme was abandoned by the very architects who in all likelihood actually crafted the keystone, Filippo Brunelleschi and Lorenzo Ghiberti. The detail is full of implications about Early Renaissance architectural practice, and it would be the first documented, completed architectural "work" involving Brunelleschi. [ABSTRACT FROM AUTHOR]