Revealing how the revolution-era debates of the 1790s redefined notions of gender across the nineteenth century, "Borderlines" provides fresh readings of the works, careers, and volatile receptions of Felicia Hemans, M. J. Jewsbury, Lord Byron, and John Keats, showing how senses (and sensations) of gender shape and get shaped by sign systems that prove to be arbitrary, fluid, and susceptible of tranformation.