After a quick look at some of Plath's poems one recognizes all over again how important it is to proof-read poems very carefully. Here a mistake in the last line is more important than the spelling howlers in some of the other poems glanced at.
The line should read ' The shadows of ringdoves chanting, but easing nothing'.
The frequency of mistakes soon creates a distrust in the reader, in particular when you are looking at a poet you are not familiar with. And before long you have lost another member.