XIII. 21.

v. 47. Maremma’s pestilent fen.] See Note to Canto XXV. v. 18. v. 58. In Aegina.] He alludes to the fable of the ants changed into Myrmidons. Ovid, Met. 1. vii. v. 104. Arezzo was my dwelling.] Grifolino of Arezzo, who promised Albero, son of the Bishop of Sienna, that he would teach him the art of flying; and because be did not keep his promise, Albero prevailed on his father to have him burnt for a necromancer. v. 117. Was ever race Light as Sienna’s?] The same imputation is again cast on the Siennese, Purg. Canto