Beatrice the Sixteenth: Being the Personal Narrative of Mary Hatherley, M.B., Explorer and Geographer is a 1909 feminist utopian novel by the English lawyer, writer and activist Irene Clyde—who is remembered as non-binary, transgender, or as a trans woman—about a time traveller who discovers a lost world, which contains a postgender society. It has been described as a successful example of defamiliarization, in that it places the reader in a world initially without any indications of gender and this places strain on the reader's attempt to apply existing social paradigms which require gender categorisation