\'darts\' and \'corn\' in ancient Roman manuscripts

[Dan D'Silva]

I can answer the one about corn -- it's the generic English word for grain, and is cognate to it (grain being a French borrowing). It only specifically refers to maize in American English. So if you're seeing it in reference to ancient Roman grain, your translation was likely made by a Briton or some other English-speaker, or perhaps by an American in earlier times when the word was still more generic here.