But when my father read on, and was let into the secret, that when a child was turned topsy-turvy, which was easy for an operator to do, and was extracted by the feet; --that instead of the cerebrum being propelled towards the cerebellum, the cerebellum, on the contrary, was propelled simply towards the cerebrum, where it could do no manner of hurt: ----By heavens! 
But my father read on, and learned that when a child was turned topsy-turvy, which was easy for an operator to do, and was extracted by the feet; - that then the cerebellum was propelled simply towards the cerebrum, where it could do no harm.
'By heavens!' 