sentences:  Cassius Dionysius compiled a farming manual in Greek, now lost.Its title was "Georgika" ("Agriculture"); it was divided into twenty books, and was dedicated by its author to the Roman praetor Sextilius.According to Columella, who referred to the work in his own surviving "De Agricultura" ("On Farming"), an amount equivalent to eight books of Cassius Dionysius' work, two-fifths of the whole, was translated from a preceding work in Punic by Mago.