I placed a jar in Tennessee,
And round it was, upon a hill.
It made the slovenly wilderness
Surround that hill.
The wilderness rose up to it,
And sprawled around, no longer wild.
The jar was round upon the ground
And tall and of a port in air.
It took dominion every where.
The jar was gray and bare.
Even though the jar was round, man-made with perfect proportions not found in nature, it depends on nature to have a place to rest. No matter what man imposes on nature, he depends on it. 
 
 The  internal rhyme  underscores the jar’s synthetic nature— contrast the coherence and simplicity of these monosyllabic words with the description of nature as “slovenly wilderness.”
Anecdote of the Jar