Does 'mid mean amid?

Context:

Thou on whose stream, 'mid the steep sky's commotion,

Loose clouds like earth's decaying leaves are shedd,

Shook from the tangled boughs of Heaven and Ocean,

angels of rain and lightning:there are spread

On the blue surface of thine airy surge,

Like the bright hair uplifted from the head

Of some fierce Maenad, even from the dim verge

Of the horizon to the Zenith's height,