He’d prove upon the blackboard, in white chalk,

By diagram—and the chalk was in his hand—

“That mawnkey and mahn had separate pedigrees.

Let A here be the mawnkey, and B the mahn.”

Loud laughter; shouts of “mawnkey!” and “sit down”

Extinguished him. He sat; and Henslow quelled

The hubbub with one clarion-clear demand,

Dictated, surely, by the ironic powers

Who had primed the Bishop and prepared his fall:

“Gentlemen, this discussion now must rest