And so having paid my duty to the gods, I proceed to rehearse some conversations[44] concerning agriculture in which I have recently taken part.  From them you will derive all the practical instruction you require, but in case any thing is lacking and you wish further authority, I refer you to the treatises of the Greeks and of our own countrymen.

The Greek writers who have treated incidentally of agriculture are more than fifty in number.  Those whom you may consult with profit are Hieron of Sicily and Attalus Philometor, among the philosophers; Democritus the physicist; Xenophon the disciple of Socrates; Aristotle and Theophrastus, the peripatetics; Archytas the pythagorean; likewise the Athenian Amphilochus, Anaxipolis of Thasos, Apollodorus of Lemnos, Aristophanes of Mallos, Antigonus of Cyme, Agathocles of Chios, Apollonius of Pergamum, Aristandrus of Athens, Bacchius of Miletus, Bion of Soli, Chaeresteus and Chaereas of Athens, Diodorus of Priene, Dion of Colophon, Diophanes of Nicaea, Epigenes of Rhodes, Evagon of Thasos, Euphronius of Athens, and his name sake of Amphipolis, Hegesias of Maronea, the two Menanders, one of Priene, the other of Heraclaea, Nicesius of Maronea, Pythion of Rhodes.  Among the rest whose countries I do not know, are Andiotion, Aeschrion, Aristomenes, Athenagoras, Crates, Dadis, Dionysius, Euphiton, Euphorion, Eubulus, Lysimachus, Mnaseas, Menestratus, Plentiphanes, Persis, and Theophilus.

All those whom I have named wrote in prose, but there are those also who have written in verse, as Hesiod of Ascra and Menecrates of Ephesus.

The agricultural writer of the greatest reputation is, however, Mago the Carthaginian[45] who wrote in the Punic tongue and collected in twenty-eight books all the wisdom which before him had been scattered in many works.  Cassius Dionysius of Utica translated Mago into Greek in twenty books (and dedicated his work to the praetor Sextilius), and notwithstanding that he reduced Mago by eight books he cited freely from the Greek authors whom I have named.  Diophanes made a useful digest of Cassius in six books, which he dedicated to Deiotarus, King of Bithynia.  I have ventured to compress the subject into the still smaller compass of three books, the first on the husbandry of agriculture, the second on the husbandry of live stock and the third on the husbandry of the steading.

From the first book I have excluded all those things which I do not deem to relate immediately to agriculture:  thus having first limited my subject I proceed to discuss it, following its natural divisions.  My information has been derived from three sources, my own experience, my reading, and what I have heard from others.

Of the definition of agriculture

a.  What it is not