Language alone (whether prose or verse, and one form of verse or many): this art has no name up to the present (i.e. there is no name to cover mimes and dialogues and any similar imitation made in iambics, elegiacs, &c. Commonly people attach the ’making’ to the metre and say ’elegiac-makers’, ’hexameter-makers,’ giving them a common class-name by their metre, as if it was not their imitation that makes them ’makers’).
Such an experiment would doubtless be a little absurd, but it would give an English reader some help in understanding both Aristotle’s style and his meaning.