[104] Cf. Crowe and Gavalcaselle, _op. cit._ vol. ii. p. 124. [105] Crowe and Cavalcaselle, _op. cit._ vol. ii. p. 77. [106] Crowe and Cavalcaselle, _op. cit._ vol. ii. p. 81. [107] _Mornings in Florence_, by John Ruskin.