Professor Mary Fissell’s essay, “When the Birds and the Bees Were Not Enough: Aristotle’s Masterpiece,” appears in the The Public Domain Review: Selected Essays, Volume III (PDR Press, 2016). A sneak peek of the volume is available at https://publicdomainreview.org/pdr-press/essay-book-volume-iii/. The Public Domain Review is an online journal, founded in 2011, that focuses on those materials that are out of copyright; their Selected Essays book series is published annually.