Walter Heape never earned a university degree, but after a world voyage he left the family business to train in embryology at Trinity College, Cambridge, and work alongside many great scientists of the late Victorian Age, including Francis Balfour, William Bateson, Michael Foster, James Frazer, Francis Galton, Thomas Huxley, E. Ray Lankester and Anton Dohrn. His entrepreneurial spirit embraced the unfolding revolutions in genetics and endocrinology,...