This is an interesting collection of addresses for the educated lay public. It starts with a delightful essay by the late Sir James Spence about his thousand Newcastle babies and their families, a famous study which 'ended up with a picture of a community, its way of living, its culture, its attitudes towards its institutions'. Liddell's talk about the natural history of neurotic behaviour introduced the audience into the field of experimental neurosis. Other addresses dealt with the environment and heredity as overlapping influences in shaping the individual, and with changing concepts of child care.