According to Mary Shelley's 1831 Introduction, her great novel is her "hideous progeny." This proclamation along with numerous birthing metaphors place her Introduction within the obstetric discourse field of the maternal imagination, a theory which claimed that pregnant women's imaginations had the power to deform their fetuses. More importantly, the maternal imagination, and thus Mary Shelley's Introduction, is a form of metic rhetoric with a distinctly maternal flavor.