[108] Not of the Evangelists, but of St. John: the medallions are the Four Evangelists. [109] See _Donatello_, by Lord Balcarres, p. 136 (London, 1904), where a long comparison is made of the doors of Donatello, Ghiberti, and Luca della Robbia. [110] Even politically, too, as Guicciardini tells us.