Our school songbooks had two verses. The first was Dr Eisenbart, second was Dr Ironbeard.

Oh I am Doctor Ironbeard
Twilli-willi-wit boom boom
My patients think I'm very weird
Twilli-willi-wit boom boom
I've pepper just to make them sneeze
Twilli-willi-wit boom boom boom boom
And pollen that will make them wheeze
Twilli-willi-wit boom boom

Eisenbart made the blind to walk and lame to talk in our version.