Dreaming Squires

You, Ruth! are rather insolent, you know
At being disappointed in your wish
To supersede all warblers here below,
And be the only Blackbird in the dish;
And then you overstrain yourself, or so,
And trickle downward like a stream of pish,
Still able to render service to your class,
By beating your padel on its flatulent arse.

Charles Darwin swoons at the discovery
that genetic stock can go down as well as up.