"hillier did first usurp the realms of rhyme"

"hillier did first usurp the realms of rhyme"

Hillier did first usurp the realms of rhyme
To parody the bard of olden time:
Haggar then followed and, in shallow verse,
Proves that to every bad there is a worse.
Some nameless critic then in furious strain
Causes the reader cruel pain
While after metre pure he seems to thirst
But shows how every worse can have a worst.