As to the models to which he is indebted for his treatment of choric metres we know nothing. In spite of the fact that he employs a large variety of metres, and that his choruses at times stray from rhetoric into poetry of a high order, there is in them a still more deadly monotony than in his iambics. The chorus are devoid of life; they are there partly as a concession to convention, but mainly to supply incidental music. Their inherent dullness is not relieved by the metre. Of strophic arrangement there is no clear trace; in a large proportion of cases the choruses are written in one fixed and rigid metre admitting of no variety: even where different metres alternate, the relaxation is but small, for the same monotony reigns unchecked within the limits of each section. The strange experiments in mixed metres in the _Agamemnon_ and _Oedipus_ show Seneca's technique at its worst: they are composed of fragments of Horatian metres, thinly disguised by inversions and resolutions of feet: they lack all governing principle and are an unqualified failure. Of the remaining metres the Anapaestic, Asclepiad, Sapphic, and Glyconic predominate. He is, perhaps, least unsuccessful in his treatment of the Anapaest: the lines do not lack melody, and the natural flexibility of the metre saves them from extreme monotony, though they would have been more successful had he employed the paroemiac line as a solemn and resonant close to the march of the dimeter. But one wearies soon of the eternal Asclepiads and Glyconics which he often allows to continue in unbroken and unvaried series for seventy or eighty lines together. He rarely allows any variation within the Glyconic and never makes use of it to break the monotony of the Asclepiad. Still worse are his Sapphics. Abandoning the usual arrangement in stanzas of three lesser Sapphics followed by an Adonic verse, his Sapphic choruses consist almost entirely of the lesser Sapphic varied by a very occasional Adonic. The continual succession of these lines without so much as an occasional change of caesura to diversify the rhythm is at times almost intolerable. At the close of such choruses we feel as though we had jogged at a rapid trot for long miles on a very hard and featureless road.