Partly, perhaps, as a result of her acquaintance with Italian literature, she had a marked fondness for disyllabic rhymes; and since pure rhymes of this kind are not plentiful in English, she tried the experiment of using assonances instead.
"The Letters of Elizabeth Barrett Browning (1 of 2)"
Frederic G. Kenyon
In this first book he ends the pentameter freely with words of three, four, and five syllables; the monotony of the perpetual disyllabic termination, which afterwards became the normal usage, is hardly compensated by the increased smoothness which it gives the verse.
"Latin Literature"
J. W. Mackail