"The Underground Stream"

Here is the ending of Dickey's "The Underground Stream," which did not make it into your packet:

I turned from the girl I had found
In a song once sung by my mother,
And loved my one true brother,
The tall cadaver, who
Either grew, or did not grow,
But smiled, with the smile of singing,
Or a smile of incredible longing
To rise through a circle of stone,
Gazing up at a sky, alone
Visible, at the top of a well,
And seeking for years to deliver
His mouth from the endless river
Of my oil on water smile,
And claim his own grave face
That mine might live in its place.
I lay at the edge of a well;
And then I smiled, and fell.