In 1803, he published a poem lampooning the medical profession, Terrible Tractoration
! and then hit his stride with Democracy Unveiled or, Tyranny Stripped of the Garb of Patriotism, which he published in 1805 under the pseudonym Christopher Caustic.
Fessenden employed social and political satire in A Terrible Tractoration
, which ridiculed medical quackery, vivisection, animal crossbreeding, and the scientific theories of such French and English naturalists as Comte Georges Louis Leclerc de Buffon and Erasmus Darwin.
Among Fessenden's publications were, in verse, Terrible Tractoration