 The text is divided into four historical sections, with the first on the trecento painters, the second focusing on Francesco Francia, the third devoted to the Carracci, and the fourth (and most valued today) providing detailed, firsthand accounts of the lives and careers of the artists who rose to pre-eminence during the 17th century in the wake of the Carracci reform, including Guido Reni, Guercino, Domenichino, and Lanfranco.