It was a quiet seeming Day

It was a quiet seeming Day –
There was no harm in earth or sky –
Till with the setting sun
There strayed an accidental Red
A strolling Hue, one would have said
To westward of the Town –

But when the Earth begun to jar
And Houses vanished with a roar
And Human Nature hid
We comprehended by the Awe
As those that Dissolution saw
The Poppy in the Cloud –