Read the poem and answer questions
Sleep, O sleep
With thy Rod of Incantation,
Charm my Imagination,
Then, only then. I cease to weep.
By thy power,
The virgirn, by Iime Oertaken
For years folom, forsaken,
Enjoys the happy nour.
What's to sleep?
TIs a visionary blesSing
A dream that's past expressing
Our uumost wish possessin9
O mayi aways Keep.

The poem makes use of ____________