This review was first published in RADICAL PHILOSOPHY 2.04 / Spring 2019, pp. 101-104. Janina Wellmann, The Form of Becoming : Embryology and the Epistemology of Rhythm, 1760-1830, trans. Kate Sturge. 424 pp. Janina Wellmann's ambitious, cross-disciplinary book, first published in German in 2010, sets out to achieve two main aims. First, it attempts to retell and reframe the emergence of a somewhat neglected discourse around rhythm, form and becoming as it - Recensions.