ISBN-13: 9781482000917 / Angielski / Miękka / 2013 / 226 str.
Published in 1917 when eugenics was an extremely popular topic with scientists, this is not a theoretical treatise on eugenics and heredity. The author tries to answer how we can improve the human stock and who should and should not marry. Reminiscent of some of the beliefs of Adolf Hitler. Scary stuff.